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Similar to how the slang word "ion" is used but Uon instead means "you don't."
Uon have to buy Taco Bell if it'll make you poop.
by SlangDefiner May 19, 2016
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Oct 31 Word of the Day
1. acronym for Laugh Out Loud + sob -- an expression for something that makes you lol and cry at the same time.

2. acronym for Laugh Out Loud, Son of a Bitch. An expression of bitter anger over something funny.
That fatal clown car accident made me lolsob-- clown cars are funny but my best friend was driving.
by duenna9 October 12, 2009
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No u backwards, this takes no u to another level
Mega bully: I am the most powerful being in the world! You have a small pp
You: u on
Mega bully: Fucking dies
by Mamzmzmskksskzp August 22, 2020
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This stands for “Undies Only Night” this refers to instances in which, due to temperature or mood, it feels right to only wear one’s undergarments during slumber.
“Oh man *strips to undies* it’s an UON fam.”
“Dawg last night was an UON ya feel?”
“UONs are a sacred practice that can, should, will, and are protected by one’s soul.”
by #17croissonicsandwhich June 29, 2019
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