The state, usually long-term, of being a closet homosexual that is beyond the usual level of gay and is too much of a pussy to come out of the closet. This person is usually very angry at the world because he/she has not yet advanced to being able to be a sexual accurate being.
Larry asked his girlfriend for anal sex on such a consistent basis it became clear to her he was a closet clinger.
"Oh for Christ's sake, I wish Jim would just stop closet clinging and stop using my sister as a ploy to come across as heterosexual" (friend repilies) "Fuck yeah, he's always such a moody bitch every time our family gets together I wish he would just stop closet clinging too!"
"Get outta my ass you dirty closet clinger"