The sticky feeling you get under your nuts after spending the day pulling guard duty in Iraq or Afghanistan.
The sticky feeling you get after busting your ass in the gym and then being to scared to shower in front of other men.
The penis equivalent to monkey butt(less painful, unless it gets to the extreme cases)
Bro i pulled 12 hours of guard, at the gate today, and i got a serious case of under cheese.
After that serious workout of P90X my bitch wouldn't suck my dick because i had some serious under cheese, from being to much of a bitch to shower at the gym
by 1dollabolla October 15, 2010
Any random substance that gets trapped in your grundle hair. These substances accumulate over time and create small,yellowish, sticky clumps. Hence the name under cheese.
Last night I had a bunch of under cheese so I paid a hooker 25 cents to lick it off.
by Le French Spankier Bastardo May 23, 2006
Any random substance that gets trapped in the hair located in between your ass crack and genitals. These substances build up over time and create small yellowish clumps. Hence the name under cheese.
Last night I had a bunch of under cheese so I paid a hooker 25 cents to lick it off.
by Le French Spankier Bastardo May 16, 2006
after sex the man makes semen and if he doesnt clean it up under his balls it makes a yellow fungus hard to get off
john: sooo how was melany last night in bed?
nate: aaaaawsome but i got some seriouse undercheese!
by SwAgMaStEr2o0o July 25, 2011

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