asspussy

ass +‎ pussy, implying it can be used like a vagina.

asspussy (plural asspussies)

1. (uncommon, slang, vulgar) The anus, as the receiving orifice in anal sex.
   • 2009, John Patrick, Naughty by Nature, 34:

     I rammed it back home, fucked him on his hands and knees til the hot little asspussy must've danced another thirty feet, leaving a trail of pre-cum in the dust.

• (anus): see Thesaurus:anus