In the new comedy film Neighbors, a suburban couple (played by Seth Rogen and Rose Byrne) find themselves embroiled in a seriously intense prank war with a fraternity that moves in next door, headed up by frat members Teddy (Zac Efron) and Pete (Dave Franco).

In reality, of course, the cast harbors no ill will towards one another. But, in the spirit of the film, which hits theaters today, we asked them to keep the rivalry going by giving us their best impressions of each other. Of course, hilarity ensued—and, really, the whole thing is worth watching for Byrne's impersonation of Rogen's laugh alone.

Check it out above.

RELATED: Read the Highlights From Our Facebook Q&A With "Neighbors" Star Seth Rogen
RELATED: SXSW: What's Funnier Than the Hilarious "Neighbors"? Seth Rogen During Its World Premiere's Q&A
RELATED:The Most Anticipated Movies of 2014