boy cunt

noun2

1. •
   (slang, vulgar) The anus of a man, usually the passive participant in gay sex.

   • Your butt plug is on the sink there clean it up too and put it back up your boy cunt and go upstairs and meet me in the office for your instructions. — 2010
2. •
   (vulgar) The vagina and/or vulva of a trans man.