A person that was crazy and partied a lot until they got into a relationship and have now become a lump like a catipillar.
My friend has become a backwards butterfly every since she started dating kyler.
A sex position where the male lays on his back with legs spread while the girl rides him with her butt as she would doing reverse cowgirl.
Haley: so... have you and your boyfriend done the deed?
Kayla: hell yeah. Me and Yann did the BEST backwards anal butterfly last night..
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