When you take a huge dump into the water tank, hence the name upper decker.
Y'all have probably seen many more definitions and guides, but I'm gonna teach y'all how to do one even better.
1. Follow the typical steps to taking an upper decker and take all neccessary precaution to not get caught.
2. On top of shitting the most horrendous turd you can manage into the water tank, also dump in a significant quantity of high calorie food or drink (like bread, meat, highly sugary drinks, etc). This gives the microbes in the shit food to feed on, making the toilet even more nasty on top of the shit thats in there.
3. Profit
Y'all have probably seen many more definitions and guides, but I'm gonna teach y'all how to do one even better.
1. Follow the typical steps to taking an upper decker and take all neccessary precaution to not get caught.
2. On top of shitting the most horrendous turd you can manage into the water tank, also dump in a significant quantity of high calorie food or drink (like bread, meat, highly sugary drinks, etc). This gives the microbes in the shit food to feed on, making the toilet even more nasty on top of the shit thats in there.
3. Profit
Man, that dude Jim was so mean last night. I can't wait to see the look on his face once he finds out about the Upper Decker Moldy Edition TM I did to his upstairs toilet
by PT118 May 4, 2024
Get the Upper Decker mug.Chicago slang for whipping out the rumpus maximus, doing a fruity little dance with your tooter, and shitting on one's roof.
Guy 1: he did an upper decker on my roof.
Guy 2: ewww man gross. Give him a Chicago sunroof
Guy 1: yeah I will, gotta get my gut going first though. Wanna get some deep dish pizza?
Guy 2: ewww man gross. Give him a Chicago sunroof
Guy 1: yeah I will, gotta get my gut going first though. Wanna get some deep dish pizza?
by very stinchy vagina master May 29, 2024
Get the Upper Decker mug.where you receive oral sex while shitting in the top part of the toilet while the other party shits on the bottom
while I was taking a upper Decker she caught me and sat down to double decker me before I could finish.
by anonymous May 30, 2024
Get the Double Decker mug.by Blueberrybitchnigga May 30, 2024
Get the Black and Decker mug.Mariah decker is the type men will bow to. She is the word itself of strong. Mariah decker isn't good at love but if she does love you you will be blessed by the juice of gods loins. She is to the end of world loyal and you tie her down she will never cheat. She has a look that stares deep into your soul past the bullshit right to what matters. Mariah decker has eyes that will bring countries down. Beware though she is a very deadly thing.
by Lonewolf _alphawolf July 5, 2022
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