upper deck
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
To perform the upper decker prank in the cistern of (a toilet).
Register: slang
Where it’s used:
Used
American English
Examples
HOW DO I KNOW YOU'RE REALLY YOU AND NOT ANOTHER VOICE?
YOU UPPER-DECKED THE TOILET BACK IN THE AVENGERS MANSION.
I FEEL BAD ABOUT THAT, BUT I WAS MAD AT LOGAN.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
To place a snus or nicotine pouch under the upper lip.
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “upper deck” mean?
To perform the upper decker prank in the cistern of (a toilet).
Is “upper deck” formal or informal?
upper deck is generally slang.