When a man is receiving oral sex from a woman and is defecating at the same time(aka blumpkin). However while defecating the woman takes a hold of the fecal matter and forces it back up the anus, hence the term reverse.
In simple words, a woman is giving a blumpkin and shoves the shit back up the mans ass.
Man last night was crazy... I followed her into the bathroom and she said she had to take a dump. I wanted a reverse blumpkin “pauly” so reluctantly she gave in.
A sexual act in which someone sucks you off while they're taking a shit, resulting in them busting a nut all over the freshly laid pile of poop. Creating a glazed "poonut."
The unspoken act of a female performing an upper decker, whilst a male counterpart carries out a defecation in the lower (relative to aforementioned upper deck) deck, whilst eating out the aforementioned female.
Gary and Bruce were both really excited to partake in the sensual act of a Double Upper Decker Double Reverse Blumpkin, but neither one had eaten a large enough meal to carry out the act.