When you butt fuck someone after an evening of questionable tandoori cuisine, specifically extra spicy and greasy curry, and cum in the anus. The expected result is an anal cream pie, diarrhoea and ring sting combo for the receiver. Bonus points if the giver shits themselves as well.
I took the missus to Raj’s, went heavy on the cobras and took her home for a Bombay-pie. I chundered.
A play on the sexual act called the cream pie, where instead of cumming inside of your partner, you spread whichever office you wish to make your Mud Pie in, and thereafter shit inside of it, and there you have a "Mud Pie"
My husband wanted me to give him a mud pie, so I asked what the hell that was... I never expected him to be into something so gross.