And this is one of the best reasons!
In this hilarious clip from the film, Franco's character Dave Skylark is interviewing rapper Eminem.
During the interview, Eminem casually comes out
Stars like embarrassing themselves too!
Celebrities of all kinds love going out to the bar for some good old karaoke fun, but we've rounded up the top 10 most HIGHlarious moments from behind the amateur mic.
[Image via Instagram.]