Me: Hey Jake what happened with you and that redhead?
Jake: It was sweet bro. I got all up in those brushfires down unda.
Me: That's fucking nasty dude.
by nutellacroissant February 27, 2020
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Jamaican expression of performing oral sex. Chewsday in the example means Tuesday.
Shane like to eat unda sheet on Chewsday. And likes likes me to clean(blowjob).
by the greenskeeper July 8, 2004
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A slang term referring to the idea of an old, non cleansed area underneath a males penis. Usually, From-Unda-Cheese is used as a deragotory term to insult or make fun of a boy who doesn't wash his genitals, or even shower at all. The word can also be used to play a joke on a female or male because when said quick enough, it sounds like Fromundacheese... which could quickly be interpreted as a type of cheese.
1) "Eww... hes got some serious From-Unda-Cheese, I can fucking smell it."

2) "Hey Katie!"
"Yeah?"
"(laughing under breath).. Do you like Fromundacheese?"
"What's That?"
"It's a kind of cheese, it's really tasty on macaroni."
"(decides to act like she has eaten it before),,...Yeah! Its my favorite kind of cheese lol."
"(starting to crack up)... lol cool..."
"What's so funny??"
by Michael Gatto August 14, 2008
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Cheese like substance from the under side of testicles due to poor hygien.
by DYLAN D GOTTI LEETCH October 31, 2007
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The paste like substance that is on a man's testicles when they either do not shower or perform various physical activities
"Yo man I need a shower I have mad down unda"
by CMW9921 April 6, 2017
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having sex with your mum in your bed
Unda da sheets... Unda da sheets... me and your muda makin your broda... under da sheets
by uderthesheetswithyourmum August 3, 2022
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