Double Blump 

The act of two people giving someone a blowjob while they are shitting

I got an INSANE double blump yesterday by Ralph

Double Blump by Jimmyscookin May 18, 2023

double blumpkin upper decker dactyl tower

Sexual act requiring 4 people. Person 1 sits backwards on the toilet while defecating and gives a blowjob to person 2, who is defecating in the tank of the toilet. Person 1 also gives hand jobs to persons 3 and 4, who are standing on either side of the toilet. Person 2, 3, and 4 high five above person 1's head.

The combination of the double blumpkin supreme, the upper decker, the pterodactyl, and the eiffel tower

Tom: Dude, I saw the nastiest thing, this chick was doing the "double blumpkin upper decker dactyl tower" at that party on Saturday night.
Ted: Wow she must be a freak!
Tom: Yeah, I almost puked!

double blumpkin upper decker dactyl tower by noey November 29, 2013

double blumpkin 

Similar to an ordinary blumpkin but in this case the girl A.C. Slater's the toilet and blows the guy as he upper decks the toilet.

Chad and his girlfriend had to shit at the same time, so to kill two birds with one stone she gave him a double blumpkin in her parents bathroom.

double blumpkin by D-Zell June 23, 2011

Upperdecker Double Blumpkin

A man takes the upper-back of the toilet off and sits on it. A woman gives him a blowjob as he takes a crap in the back of the toilet. After crapping and the blow job is done, he puts the lid back on the toilet.

An unsuspecting person comes in later and uses the toilette. When they flush the toilet it fills with brown water from the crap the man took in the upper deck.

“I was over Al’s house and I upperdecker double blumpkin’d his toilet. That thing was flowing brown all day”

Upperdecker Double Blumpkin by Stephen Roche September 21, 2019

Double Blumpkin 

When you and your partner simultaneously shit on each other while 69’ing

The other night me and my girl were in the mood, so we decided to double blumpkin

Double Blumpkin by Space Dock April 1, 2010

Double blumpkin supreme

Receiving oral gratification from a defecating woman while performing an upper deck.

We both had to crap, and she was feeling nasty, so we pulled a double blumpkin supreme

Double blumpkin supreme by D-Bone February 23, 2005

Double Blumpkin 69 

When you're getting a blumpkin but the person sucking your dick is upside down so you can 69 but they also poop at the same time... this means their poop is either going to slide down their back and hit the floor, fall forward into your face while you suck and/or lick their genitals OR you'll get a diarrhea fountain all over their back and your face.

I wanted him to double blumpkin 69 me but he said he wouldn't do it unless I had diarrhea for the fountain effect.

Double Blumpkin 69 by BlumpkinFiend6669 October 15, 2022