Blumpkin Decker

To receive a blowjob whilst depositing feces in the upper tank of a toilet.

A combination of a blumpkin and an upper decker.

As vengeance for not being given a tour of my friend's dairy, I enlisted his sister’s help in performing an blumpkin decker in his bathroom.

Blumpkin Decker by porkchopbiscut October 24, 2004

Triple Decker Blumpkin 

An act involving 3 willing participants. The first participant removes the lid of the cistern on the toilet and sits in while proceeding to take a nifty little dump inside. The second part-taker sits AC Slater style on the toilet bowl performing fellatio on the first participant whilst pissing into the toilet. The third and luckiest particpant will be kneeling like an alter boy with their lips firmly clasped in a suction grip around the anus while the second participant power dumps into their mouth. To finish the third participant then proceeds to splurge a creamy-corny parcel onto the bathroom floor.

Larry: you should have seen what I caught peter doing earlier. I walked into the bathroom and he was sitting top-deck in the ensuite having a triple decker Blumpkin with with Greg and Sarah. Shit everywhere.

Nora: :O

Triple Decker Blumpkin by TheBlumpkinator August 1, 2012

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

A.C. Slater-Upper Decker Blumpkin 

When a man defecates in the top tank of the toilet while receiving oral sex from someone pooping and sitting backwards on the seat.

"Hey girl, my dick is real hard and I noticed that we are both have been farting a lot. Perhaps we should A.C. Slater-Upper Decker Blumpkin"

A.C. Slater-Upper Decker Blumpkin by Juan Perico March 8, 2009

Upper Decker Blumpkin AC Slater 

This act requires both a male and female to perform. A male takes a crap in the upper tank of the toilet while performing a delicate balancing act, and getting his cock sucked, as the female takes a crap on the toilet facing the wrong direction. Much like how AC Slater sits in a chair when he's at the Maxx.

I got my girlfriend so drunk that I was actually able to convince her to perform the Upper Decker Blumpkin AC Slater with me while my buddy hid in the closet and video taped the performance!

Upper Decker Blumpkin AC Slater by GivinHer TheBusiness December 30, 2007

Double Decker Blumpkin 

the act of a male individual shitting or pooping in the upper deck of the toilet while a girl goes down on you (aka; sucking your penis), while she releases poop out of her butthole into the lower deck bowl of the toilet.

Jeff to Randy: Dude, bro, Jerry definitely just got some of that double decker blumpkin action dome piece from that random B with the STDs.
Randy to Jeff: Real nice, real fuckin' nice.

Double Decker Blumpkin by Lambeaux + Jerry March 27, 2009

Double Decker Blumpkin 

When someone is doing an upper decker and the person on the lower decker is is giving head and takeing a shit at the same time.

I walked into two people doing a Double Decker Blumpkin in your bathroom.

Double Decker Blumpkin by sick mo'fo December 9, 2012