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

Always a classy gentlemen, Martine opted to forego the often dirty Blumpkin for the more hygienic French Blumpkin. Stacey was appreciative of the fact she didn't have to taste his shit.
by PV Kings November 12, 2012

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

by metalmetalrob February 26, 2010

by ZeroExe July 10, 2021

"Our therapist suggested trying new things in the bedroom to spice up our marriage. Lenny wanted to try the chubby blumpkin. It was kinda gross...can I borrow your toothbrush?"
by taytay1420 August 15, 2016
