Spartan Upper Decker 

When one is frustrated and angered to the point of giving the accused a most-deserved upper decker and feels the need to voice their anger- they must, just before dropping a lung in the toilet tank, shout loudly- "This is Sparta!!!" as spoken in the movie 300. After this is spoken, one would shit with vengeance into the tank.

Angry person- That bitch of a waitress ignored our table for over half-an-hour because they add automatic gratuity to the check, so I will leave them my opinion of their service in their toilet tank in the form of a Spartan Upper Decker.

Friend 5 minutes later- Did you do it?

Angry person- I showed no mercy!

Spartan Upper Decker by Litaker April 25, 2011

atomic upper decker 

As with a traditional Upper Decker (where the attacker poops into the reservoir of the victim's toilet), but with the addition of gelatin powder, which, coupled with the cold water temperature and cool porcelain construction of the reservoir, causes allows the mixture to set into a poop jell-o which requires the victim to manually scoop it out

"Hey John, did you hear? someone left Tim an Atomic Upper Decker during the party on friday!"
"Wow, he must have really pissed someone off."

atomic upper decker by Judge)Mental December 19, 2017

Triple Upper Decker Blumpkin Supreme 

The art of recieving a blowjob from a woman while she is shitting in the bowl of a toilet and you are taking a shit in the tank/cistern of the same toilet at the same time.

"Tony pulled a Triple Upper Decker Blumpkin Supreme on Vicki in our bathroom last night."

Triple Upper Decker Blumpkin Supreme by vaaleainhoinen January 25, 2009

Steamy Upper Decker, Double wet Blumpkin 

One participant is sitting on the upper deck of a Toto Toilet while your partner is sitting on the lower deck; with the seat warmer on and the water blasting against their genitals. The upper decker is receiving Fellatio while both parties are passing a Cleveland steamer.

Guy 1: Gawd! Julia is such a basic bitch, i cannot stand her.

Guy 2: Sure, but at least her parents are rich enough to afford a Toto Toilet.

Guy 1: So?

Guy 2: She totally gave me a Steamy Upper Decker, Double wet Blumpkin
Guy 1: Legendary!

Steamy Upper Decker, Double wet Blumpkin by Throbbin-Rockin-Rod January 24, 2018

Greek Upper Decker 

The art of sneaking into a frat party for the purpose of taking the most massive grueling shit in the upper tank of the frat house's toilet. That way when they wake up to clean the place in the morning, they are greeted with the most fowl awesomeness that only frat boys deserve.

Dude, I totally dropped a Greek Upper Decker in ZBT this past thursday.

Sweet. Those guys are dicks. You deserve a trophy man!

Greek Upper Decker by The Greek Upper Decker January 10, 2009

Reverse Upper Decker 

When taking a dump with such tremendous force that it actually pushes the crap up into the tank from the bowl.

Man that Thai food packs a punch - i just had a Reverse Upper Decker in the shithouse!

Reverse Upper Decker by Chief Brody April 8, 2010

jersey upper decker 

Same as the standard upper decker except you eat a 20-pack of White Castles first and then take the massive dump in the tank. when the next poor slob flushes, the smell from the dirty water will cause an uncontrollable craving for White Castles.

When my ass was about to explode from that 20-pack of castles I ate, I gave marco's toilet a jersey upper decker.

jersey upper decker by berserkers rule February 5, 2010