What Does UPPER DECKER Mean?

UPPER DECKER means "Poop in a Toilet Tank."

Upper decker is a slang term used to refer to the act of pooping in the cistern of a toilet.

Upper deckers are mean-spirited pranks, often perpetrated against someone who has done something to annoy or offend the protagonist.
  • When our plan to overturn the election result failed, I did an UPPER DECKER in the West Wing toilet.
  • What has Chris Rock got against Will Smith? Did he do an UPPER DECKER in his dressing room or something?


When I write UPPER DECKER, I mean this:

meaning of UPPER DECKER

"Poop in a Toilet Tank"

Summary of Key Points

"Poop in a Toilet Tank" is the most common definition for UPPER DECKER on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
Definition:Poop in a Toilet Tank
Type:Word (Slang)
Guessability:guessability level 4

4: Difficult to guess

Typical Users:typical user
Adults and Teenagers

Example of UPPER DECKER Used in a Text

author logo

This page is maintained by the Cyber Definitions Editorial Team.

Help Us Improve Cyber Definitions

  • Do you disagree with something on this page?
  • Did you spot a typo?
  • Do you know a slang term that we've missed?
Please tell us using this form.


Try our fun quiz to test your knowledge of slang and texting abbreviations.
gold cup

gold cup

gold cup

  • This test has questions.
  • A correct answer is worth 5 points.
  • You can get up to 5 bonus points for a speedy answer.
  • Some questions demand more than one answer. You must get every part right.
  • Beware! Wrong answers score 0 points.
  • 🏆 If you beat one of the top 3 scores, you will be invited to apply for the Hall of Fame.
Scoring System

Cyber Guru (+)
Cyber Hero (+)
Cyber Captain (+)
Cyber Sergeant (+)
Cyber Recruit (+)