rule 34 2019 anatomically correct anatomically correct genitalia anatomically correct pussy animal genitalia animal pussy anus ass black hair blue body blue hair blue tail clothing crotchboob dock duo english text equid equine equine pussy female friendship is magic fused fingers gender transformation genitals glowing glowing horn hair halcy0n hasbro hi res horn human human to feral magic mammal mtf transformation my little pony nipples one eye closed open mouth penis shrinking purple body purple hair purple nipples purple tail pussy shirt species transformation text tf into fictional character topwear transformation trixie mlp twilight sparkle mlp unicorn 6312081