A variant of the reverse cowgirl where the girl straddles the man facing away, sticks his dick in her ass and rides vigorously while looking back at her lover, moaning "I'm a pony! I'm a pony!" Ass-slapping is optional but recommended.
Hey Carlos, last night Brittainy did the turn-back pony and I'm still sore. I left hand sized bruises on her ass cheeks tho.
The girl gladly turned her back on suffering if there were no donations or dollar signs involved, as she held nothing sacred enough not to turn her back on it. She said she wouldn't when they asked her would you turn your back?