A fork of Rural Dictionary
When a guy is getting his dick sucked by a girl while he's on the toilet taking a shit
Bob is taking a shit at home when his wife walks in and starts sucking his dick.
Plumpkin is a variation of the more well known term blumpkin. What differentiates a plumpkin from a blumpkin is that the woman performing the oral sex on the man who is taking a shit is morbidly obese, or plump as some would say.
That porker gave me some awesome plumpkin this morning.
The act of receiving a blumpkin from a plump woman or man.
It was slim pickings at closing time, so instead of a blumpkin, I had to settle for a plumpkin.
a blumpkin with a fat (plump) guy.
That guy getting a plumpkin looks like an avocado.