A chamber which is located in the rectal region. Usually closely guarded by anal trolls.
Guy 1: Man last night was awesome dirty!
Guy 2: Let me guess, your gf finally put out -_-
Guy 1: No dude, even better!
Guy 2: Ok, so whats better than getting laid?
Guy 1: Well finally after 35 minutes of persuation I finally convinced my gf to let me into her anal chamber.