A homosexual guy, preferably in highschool or college who is gay but keeps his sexuality a secret. A closet gay can be ANYONE. I know guys from highschool who only talked about tits and ass, yet now they're out as gay.

The closet part comes from coming out as gay, vice versa if you haven't came out you're still in the closet.

The process of searching a building for an empty bathroom. A successful bowl search typically relieves the frustration of uncomftorably defecating around others, although in less frequent cases the desire to urinate alone is a factor. Bowl searching can be done anywhere although it is most prevelant on college campuses.

A closet homosexual is what most gay supporters are. These supposedly "straight" people spend all their time defending homosexuality that it's clear that they must be gay themselves hence their obsession with it. They call anyone who finds disgust with homosexuality a "bigot" even if they don't hate the gay person themselves. Their common argument (which is also illogical) against "gay haters" is that they must be gay themselves because they find the concept of two guys pounding each other hard in the ass repulsive. Perhaps it's these gay defenders who are gay themselves?

What most atheists are hence their constant whining about homosexuality.