This portion of the review says it all:

Though Chuck and Larry begin the film as mildly homophobic, their time posing as queer is supposed to open their eyes to gay acceptance. Really, though, it's just an excuse for the film to throw lecherous gay guys at them. While fending off one man's advances, Larry protests that “just 'cause you're gay doesn't mean you're horny for every guy you meet,” but in this film, it kind of does. Virtually without exception, the gays here are presented as sex-obsessed or as men who really want to be women. Biel's oblivious attorney enjoys spending time with Chuck because “girls rule,” and even when another firefighter comes out for real, he's immediately drained of all masculinity and starts to sing “I'm Every Woman” in the group shower.

The Advocate