upper - decker

When one takes a shit in the upper portion of the toilet. ( the tank ).

mike was really pissed that the land lord was evicting him. So he left him an upper - decker.

Jim wanted to get back at his best friend Steve for sleeping with his girlfriend, so he left him an upper - decker.

upper - decker by TNT- DOUG September 27, 2006

upper decker double deluxe blumpkin 

It's the act of the man taking a dump in the tank of the toilet while the woman takes a dump in the bowl while giving the man a blowjob while a third party performs a golden shower.

Dude, last night Stacey and Dave and I did the upper decker double deluxe Blumpkin, it was gnarly!

upper decker double deluxe blumpkin by Reedski March 27, 2015

Upper Decker Toilet Wrecker 

Verb
The act in which one removes the lid to the tank of a toilet and proceeds to deficate or shit. Once finished, replacing the lid and walking away as if nothing has happened.

End result: Next person flushes toilet and shit is then flushed through.

"Yo dude...I just did a 'Upper Decker Toilet Wrecker' up in that pisser man...hahaha...poor bastards"

Upper Decker Toilet Wrecker by Shaff Dizzle January 5, 2004

upper decker delux (dry) 

the act of taking a dump in the tank of the toilet, AFTER disconnecting the chain AND draining the water. with the hope of drying the shitlog to the bottom of tank,guts and or the float.

my budy forgot my cake on my b-day, so i left one "caked" on his! twas the ol' upper decker delux (dry) f***tard

upper decker delux (dry) by jay and nick October 26, 2006

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

Upper Decker Reverse Blumpkin Double Dump Out

Taking a dump in the toilet tank while having your dong slobbed by someone sitting reverse on the toilet while they are dumping

Me and my girlfriend totally did a upper decker reverse blumpkin double dump out!

Upper Decker Reverse Blumpkin Double Dump Out by Dick Head Buckaroo September 20, 2015

Upper Decker Double Blumpkin 

The act of sitting on the top part of a toilet and shitting while getting head by the girl who is strattling towards you on the bottom seat while also taking a dump at the same time.

The raunchiest act of the famous "blumpkin" to the next extreme calling it the Upper Decker Double Blumpkin.

Upper Decker Double Blumpkin by Dante Rau July 20, 2006