A plumpkin is the act of receiving oral sex while taking a dump. Could be considered gross, but the feeling achieved during orgasm is really pulsating.
My buddy got his first plumpkin last night and nearly busted his prostate!
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.
While simultaniously recieving head and taking a dump, the reciever stands up slightly so the poop falls into the toilet and the toilet water splashes the giver in the face.
I was getting head from some ho and gave her a fat plumpkin.
A girl giving a guy a blow job while the guy is taking a crap
While in deep constipation, John received a plumpkin from susan.
1) any female who dresses as though she weighs 15-30 lbs. less than she actually does. Frequently sports an exposed roll of non-baby fat overlapping the waist of her pants and/or breasts unintentionally bulging out of bra cups.
2) any unacceptably unattractive female who would become acceptably attractive upon losing 15-30 lbs.
I hooked-up with a plumpkin at the mall food court, hoping to gradually sweat the jellyrolls off of her. But once she had a man, rather than getting leaner and hotter, she just got lazier and bought bigger clothes.
giving a guy a blow job while he's taking a dump
i was taking a crap and my girl walked in a gave me a plumpkin...
A plumpkin is a type of animal which is rarely found on Earth. The requirements for a creature to qualify as a plumpkin are that it must be a carnivore, and its mouth must at least appear to make up at least 40% of its entire body. Plumpkins are also often round, and usually are willing to try and eat just about anything. This makes for a creature which is essentially just a head. It is also not uncommon for plumpkins to have small, mostly useless arms.
Most plumpkins are found in fiction, but there are some real-life examples, such as the deep sea anglerfish.
Ted: "It was crazy! It was as big as my TV, and it had this huge mouth! It bit my neighbor's head off!"
Bill: "That's horrible! I didn't know we had plumpkins around here."
Example in Film: The Martians in "Invaders From Mars" (1986)
Example in Game: The Cacodemons in "Doom" (1993)