Sitting on a toilet AC Slater style while defecating, and performing fellatio on an individual in the act of upper decking the same toilet.
It sounded like a good idea last night, but we spent all morning cleaning the tank after trying out the upper blumpkin.
by szkud September 28, 2013

She agreed to give me a blumpkin, though the event was bittersweet. The girl did a good job, but my burrito from last night turned this blumpkin into a Blazing Blumpkin. At the end of the ordeal, my dirt star looked like a red giant.
by KC Mojo July 19, 2010

A blumpkin received at a Dunkin' Doughnuts establishment. Only after buying an unfrosted doughnut and placing your penis through the doughnut hole may the blumpkin begin. The Dunkin' Blumpkin is only completed after you have frosted the doughnut yourself and it is finished by your partner.
by Na0227 October 4, 2014

I gave her a red blumpkin and I looked like ronald mcdonald afterwards! As if that werent bad enough, now I cant get the stank outta my beard !!
by zallirog July 22, 2015

After receiving a blumpkin, the receiver then pushes the blumpkin giver's head into the toilet and flushes.
by Shenans March 2, 2017

by Witch_Devil May 11, 2023

When you’re giving someone a blumpkin and you reach around and scoop up a little shit to lube the balls.
by Jizzalina89 January 18, 2023
