Word.ws English Dictionary

upper decker

upper decker noun: the prank of defecating in the cistern of a toilet, so that flushing the toilet brings in dirty water instead of clean.

Noun

upper decker (plural upper deckers)

  1. (slang) The prank of defecating in the cistern of a toilet, so that flushing the toilet brings in dirty water instead of clean.
    • Had he been doing “upper deckers” for years in his community?2014, John Waters, Role Models
    • Should've bet on him doing an upper decker.2017, Molly E. Lee, Love in the Friend Zone

Forms of upper decker

pluralupper deckers

Origin of upper decker

From upper + deck + -er.

Questions about upper decker

What does upper decker mean?
Upper decker means the prank of defecating in the cistern of a toilet, so that flushing the toilet brings in dirty water instead of clean.
What part of speech is upper decker?
Upper decker is a noun.
What is the plural of upper decker?
The plural of upper decker is upper deckers.

Words near upper decker in the dictionary

  1. Upper Dagsian
  2. Upper Darby
  3. Upper Dartbrook
  4. upper deck
  5. upper decked
  6. upper decker
  7. upper deckers
  8. upper decking
  9. upper decks
  10. upper decky
  11. Upper Deerfield

Source and license

Adapted from Wiktionary: upper decker (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: Updecke-us-eng.wav.

Cite this entry: “upper decker.” Word.ws, https://word.ws/upper_decker. Based on Wiktionary, CC BY-SA 4.0.