A secret place for self gratification

A semi-private location used to relieve one's self while on Big Brother 7/AllStars.

a secluded cabin or lean-to in the woods for pulling oneself in

When your wife/girlfriend is menstruating (i.e. on the rag) and the only sexual release available to you is masturbation.

(This is a tribute to the late comedian Robert Schimmel, who coined this phrase before his death in a song of the same name.)