Rob McElhenney discusses the larger Mac in It's Always Sunny in Philadelphia Season 7Heyo! The gang from Paddy's Pub is back as {0} kicks off {1} Thursday, September 15 at 10 PM ET. As you may have noticed, one of the cast members, {2}, who plays Mac, has bulked up significantly, putting on at least 50 pounds for this new season.

Rob McElhenney recently held a conference call to discuss Season 7 of It's Always Sunny in Philadelphia. And his very fat ass. Here's what he had to say below.

How much of the show is scripted versus you guys just riffing?

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Rob McElhenney: Well, we usually try to do at least one or two takes completely scripted. So, we very carefully and arduously over probably the longest span of the production cycle spend writing, and I'd say we get at least one or two, maybe three, takes of it exactly as scripted. And then from that point forward we'll ad lib and maybe change the scene, or if certain things aren't working we'll make cuts. And then, in the editing room we have either scripted or non-scripted takes, and then sometimes we find that it just works better in script form, and sometimes it just works better as a completely new scene, and we'll build something completely different in post.

Do you ever worry that you go too far?

Rob McElhenney: No. I think we have a really sensitive barometer for that, and ultimately we have a rule, which is, if it comes across as the characters being mean and abusive, then it's funny. But, if it comes across as the writers or the creator or the producers being abusive or mean, then it's not funny. And, I think ultimately the audience can tell the difference.

I think there's more buzz this week than any other season. I know where I'm going to be on Thursday night. Can you tell me where you and Kaitlin (Olson) will be?

Rob McElhenney: Where will I be Thursday night? I've seen that episode, I mean I've lived with that episode since January when we broke it and wrote in, and then we shot it, and then we edited it. And then, I've screened it like five or six times, so there's no way I can watch that episode again. And, we'll also watch it on Tuesday for the premiere. I very rarely watch it on TV, just because, by that point, I've seen it so many times. So, we'll probably be drinking wine and hanging out.

I was really impressed with how all three of you guys were involved, it seemed, in every aspect of the set, the filming, what was going on behind the scenes and in front of the scenes. Can you tell us a little about your viewpoint as one of the actors/producers/writers with the show?

Rob McElhenney: Yes. I mean, I can't imagine doing it any other way. For us, it's just sort of been that way from the very beginning. And, because it was such a grassroots show, and because we didn't know how to make a TV show, we just kind of figured it out as we went along. It's the really, the only way we know how to do it, and we've definitely, over the years, have gotten a little more patient and certainly a lot more respectful of each person's individual role on the show. And thus far now, I think, in Season 7, we've spent a lot of time delegating responsibility, and that's really been, I think, the key to the show continuing to grow and to get as good as it's gotten. So, it used to be that we would sit behind the monitors, and right behind the director's ear, and kind of be really overbearing, and I think we've gotten to a point where we work with the directors. Well, this year one director, Matt Shakman, we've gotten to a really great rhythm with him where we're getting what we want, and he's getting what he wants, and everybody's happy.

One of the big things this season we can expect is, you putting on a lot of weight and getting fat. Could you tell us more about that? You actually put on what, 50 pounds I think it is?

Rob McElhenney: Yes. A little over 50 pounds. I think the final count is like 52 or something-53.

Where was the reasoning behind this? Were you guys just like, 'Oh, we think it'd be funny is Mac got fat?' What did you guys think about that?

Rob McElhenney: No. Ultimately, what happened was, it was in between seasons last year; six into seven. And, I was watching a popular sitcom, and I noticed that the actors were getting better looking as the years were going by, and I started to think about any show that I have ever seen in which that wasn't the case.

I feel like shows in their sixth, seventh, and eighth season, the actors have a lot more money, they become a little bit more famous, and they have better access to better wardrobe, new hair, new teeth, sometimes plastic surgery. And, I thought how untrue of life that was, that especially characters like this who abuse themselves in so many different ways, would start to look-would start to deteriorate over time and certainly wouldn't look better. And, our goal has always been to try and do what's not being done on television, and literally deconstructing the sitcom. So, where most sitcoms try to make the characters as lovable and likable, and as far I'm concerned, as fake as possible, we try to go the opposite, which is to make them as deplorable as possible, just to see if we can get away with it. And, it seems like the audience responds to that.

So, for me, it wasn't just about getting overweight, it was about trying to look as unattractive as I possibly could. So, it was as if, what would happen if the character would completely just let himself go and his age caught up to him? So, I grew a disgusting beard, I didn't wash my hair, and I was 50 pounds overweight, and yet the character still thought he looked good. That to me was funny. Simply getting overweight, that would be just a stunt, and that wasn't very funny to me.

What else can we expect from Season 7, besides that?

Rob McElhenney: Well, one of the episodes I'm really, really proud of, and I think it's really funny is a few of our writers were really into the show Toddlers and Tiaras, which is about a children's beauty pageant, and we thought, 'Man, that would be really funny to see these characters in a situation like that.' And, we're always trying to do more musical episodes, because we had such a great response to our past musical episodes, like Nightman Cometh, and when we started the band. So, this was an opportunity to kind of fuse the two together, and I think that will be our third episode of the season.

I was wondering if you even have kind of like an end game in mind, like as far as how seasons that you see the show running for, where the characters are going to go? Obviously you don't want to spoil things like that. But, just like, do you have that kind of a thing in your mind? How long you see it running for?

Rob McElhenney: Well, originally we did. And, what we found is that we just kept thinking that the show was going to get old after awhile as most sitcoms do, but I think we have a couple of things on our side. One is that we don't do 22 or 24 episodes like most sitcoms. We've done as few as seven and as many as fifteen. But we've never exceeded 15, and I think that that's helped us just from a content standpoint. So, we have that kind of going in our favor, so it's not about the amount of years. It's more about the amount of episodes. And, every time I kind of mention to fans, 'Hey, do you think that this is going to get old?' they keep saying, 'Well, it hasn't gotten old, yet.' So, our feeling is, if we can keep making the episodes and people keep watching them, then we'll try to do it as long as possible, and I think a barometer for us will be each year saying, "Is this episode as good or better than the season before it?" And, if the answer is no we'll have to think about wrapping it up. And, if it is, we'll keep making them. And, as of now we're under contract for at least two more.

Just out of pure curiosity, in your journey to put on 50 pounds, is there a particular food item you found most effective?

Rob McElhenney: Donuts. Yes. I actually worked with a nutritionist to try and do it as healthy as possible, but at a certain point I just needed to consume as many calories as possible. And, he said go for the donuts so that's what I did. I would literally eat six to eight donuts everyday through production. That was amazing. I will not lie to you.

Was it Krispy Kremes, Dunkin Donuts?

Rob McElhenney: Yes. It was actually from a local donut shop that baked them fresh daily. I was originally buying some of those donuts that you can find prepackaged in the supermarkets, and my nutritionist was like, 'Look. If you're going to eat donuts everyday, don't eat those, because they have a shelf life of six months, and they're pumped full of so many preservatives and chemicals that you're going to wind up even sicker than you would be otherwise.' So, I was literally encouraged to find a healthier form of donut, and I found that in the form of a local bakery.

The gang has always gotten into some fantastically awesome and outrageous situations. Is there one specific thing that you would like to see happen that you guys haven't done yet, sometime in the near future, whether this season or in a future season?

Rob McElhenney: If I can answer that question now, it would have already been in an episode. I think, ultimately, we rack our brains in that writer's room every year trying to figure out just that. And, there hasn't been anything that we've tried, that we've really wanted to do, that hasn't quite worked. There are certain things that we-there are some things-that we try to do that might not work in a particular episode, but we can make them work in another episode.

When you guys are coming up with storylines, do any of you ever say, 'No, my character would never do that?'

Rob McElhenney:

No, pretty much because our characters would do anything if it suited their needs in the moment. So like, even forms of like great altruism, or any acts of great altruism, would still play regardless of how deplorable our characters were if they felt like it was going to garner them what they wanted in that particular moment. Because, then you buy it, because you know what the motivation is, even if in the moment the motivation is selfless, you know ultimately it's going to be selfish.

When you're on hiatus, are you pursuing other work like auditioning or writing other things, or just taking a much-needed break?

Rob McElhenney: No, I feel like I'll take a break when I'm in my 40s. I think right now I want to take as much time as I have to take advantage of the opportunities that we have because of the show. So, I'm writing a movie, and I know the guys are writing a movie and working on a couple of other TV shows, and we're producing an animated show for FX that will be on next year. So, we try to stay busy.

This season is looking fantastic, spectacular, and obviously it requires some planning. What are you thinking, assuming you're getting approved for Season 8?

Rob McElhenney: Yes, we actually we just signed an overall deal for the next two years with an option for the tenth season, so we're definitely coming back for Seasons 8 and 9. And, what we're going to do is, cut the order back to ten episodes, at least for Season 8. We're not sure about Season 9. And, ultimately that's because we want to make sure that the quality of the show stays up to par, and ultimately we'd all love to do 15, 20 episodes, because it would be incredibly lucrative. But, I think, really when it comes down to it we don't want to ever feel like we've sold out our fans. And as frustrating as it might be for us and for the fans to only get to watch ten episodes, and for us to only make ten episodes next year, I think, ultimately, it will keep the quality of the show up. And, to me, I believe that this season, the seventh season, is our strongest season yet. Which to me, it makes me incredibly optimistic for the future.

Do you guys plan on ever doing another Night Man Cometh tour? I know that was really well done.

Rob McElhenney: It was. We actually, we thought about doing it this year, to promote this year, because two years ago we did the East Coast and the West Coast, but we took a lot of flack from all our fans in the Midwest and in the South who wanted us to come there. You know, the Chicagoes and the New Orleans and the Dallases and the Houstons and the Kansas Cities, and we really wanted to make it happen, we just didn't have the time. So, this year we talked about doing it, but it would've been right around now and Glenn's wife would have been having a baby. So, we decided let's put it off until next year. And so, I think we're planning to do it next year.

You have some pretty fantastic guest stars and cameos, especially from actors from the '70's and '80's. Who's the one person you haven't had on the show yet that you hope to get on at some point?

Rob McElhenney: That's an excellent question. We worked on John Tesh for awhile, but that didn't work out. That would be amazing. This year we have The Kings of Leon, which we're super excited about. They're friends of ours, and they were really interested in doing an episode of the show, so we wrote them in something really cool in the season finale.

Rob McElhenney returns as Mac when It's Always Sunny in Philadelphia debuts on Thursday, September 15 at 10 PM ET on FX.