The act of giving or receiving a blumpkin while on the street. Subject A proceeds to defecate in a street, sidewalk, or alleyway. Subject B performs fellatio on Subject A during the defecation process.
The homeless guy was already taking a dump in the alley; I thought I would be charitable and give him a Street Blumpkin.
by EvilBender October 12, 2009

by spoonman14 June 10, 2009

"Dude, I drove through West Virginia one time and hooked up with this hot mountain chick and she gave me a country blumpkin behind her parent's shack. It was messy but awesome!"
by Alamo Dudes March 11, 2009

i went into my buddy's bathroom with my girlfriend and she gave me an upper blumpkin, it was awesome
by its me A.G. June 19, 2010

When you can’t get anyone to give you an actual blumpkin so you are forced to jerk off whilst taking a shit which is a cheap knock-off of a blumpkin, hence a wish.com blumpkin.
Shane couldn’t convince Keith to come over and give him a blumpkin, so he had to give himself a wish.com blumpkin.
by Larry Fromish April 11, 2021

A male (the receiver) sits as if to straddle the toilet, then reclines backward so that his head rests on another chair and his body is parallel to the floor. The other party, or giver, handstands on the toilet seat so that their body is perpendicular to the receiver's body while facing towards the receiver's feet, then proceeds to fellate the receiver while he takes a shit. Less skilled practitioners may allow the giver to prop his/her legs against the wall for added stability; it is to be noted, however, that this reduces the range of fellating motion.
I decided to become a gymnastics instructor so that I could receive perpendicular blumpkins whenever I had a hankering.
by D_in_U_since1834 December 13, 2012

**
"What's that brown pellet on your chin?" asked Ryan.
"I was giving Hammie a hamster blumpkin," said Sarah.
"Cool," said Ryan, "can I have one too?"
**
"What's that brown pellet on your chin?" asked Ryan.
"I was giving Hammie a hamster blumpkin," said Sarah.
"Cool," said Ryan, "can I have one too?"
**
by scodder August 8, 2010
