boy pussy /ˈboɪˌpʊ.si/ noun2 •(slang, vulgar) The anus of a man, usually the passive participant in gay sex."Put your legs up for me. That's it bitch, show me that boy pussy," Marco said. "You want this, whore?" he said, rubbing his wildly throbbing cock against the boy's tight hole. — 2009 •(vulgar) The vagina or vulva of a transgender man or other transmasculine person. formsboy pussies