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
Sooo, is John Mayer a genius or not??
Well, musically he might be, but it seems that's not necessarily the case with his crossword puzzle skillz.
On Jimmy Kimmel Live!, John not only let the cat out of the bag about his lack of "genius" abilities, but he did kindly pay forward some love to his lady when chatting about their duet, Who You Love.
Ch-ch-check out all he said about Katy (above)!
And ch-ch-check out pics of the genius in action (below)!