Bad things happen to good babies in the latest hilarious clip from Neighbors, starring Zac Efron and Seth Rogen. Things have taken a turn for the 'very wrong' in an escalating war between new parents Mac and Kelly Radner (Seth Rogen and Rose Byrne) and their next-door fraternity led by bad boy Teddy Sanders (Zac Efron). After their newborn swallows something very unsanitary, the couple must confront dean of the school Carol Gladstone, played by Lisa Kudrow. She only wants good headlines and refuses to boot Teddy and his boys from the campus, offering mom and dad Radner the encouraging fact that at least their new neighbors are practicing safe sex. Watch as Carol and Mac verbally throw down in this latest scene from the must-see comedy of the summer.