Too-good-to-be-true male stripper flick Magic Mike isn't even in theaters yet, and its screenwriter is already adapting it into a musical. Seriously.

Judd Apatow has fulfilled his promise to "shake Americans from their squeamishness about male anatomy in movies" by featuring Forgetting Sarah Marshall star Jason Segel completely nude in the movie's pivotal break-up scene. And as the LAT pointed out yesterday, Segel's manhood provides the film's "most captivating…