The Black Hole of Calcutta was a small dungeon where Indian troops held British prisoners of war after the capture of Fort William on June 20, 1756. According to a disputed account by a survivor, 123 of 146 prisoners died of heat exhaustion in the confined conditions. Source Wikipedia
That bathroom of yours looks like the black hole of Calcutta
by Danada March 17, 2006
A very loose vagina. very dark and scary
I say Betty last night, gosh she's whore...I got lost in her black hole of calcutta.
by fatwalrus October 05, 2006