Zac Efron, Neighbors

What happens when one grown man and another slightly grown man can't along when they live next door to each other? Hijinks, and lots of it, if this new trailer for "Neighbors" is anything to go by.

Seth Rogen and Zac Efron square off in the upcoming comedy, with the former playing happily married man (to Rose Byrne), living in the suburbs, who finds his life disrupted thanks to the former Disney heartthrob who moves in next door, bringing beer kegs, girls and a frat party with him. And so what ensues is an escalating turf war, where you'll have to suspend your disbelief that the cops wouldn't/can't/are unable to get involved. That said, it seems like if you dug "This Is The End," this is on a similar wavelength of balls out craziness. 

"Neighbors" arrives on May 9, 2014. Watch below.

Neighbors Poster