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Any container used to hold liquid (such as a glass, mug, or a cup), that could be potentially used to cum in, that has been cummed in, or is frequently cummed in.
Dude, don't leave your mug in the living room, Stefan'll use it as a cum cup
by TS15592 December 05, 2007
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a girl that has sex with a lot of guys. hooker
1. You fucking cum cup. You fucked everyguy on the block..
2. Yo, that girl fucked the whole school.. She is a fucking cum cup.
by Derty-E July 27, 2006
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Used to reference the anatomically modern female humans' dimples commonly found situated within the lower back region that corresponds to directly above the buttocks.

This word's creation/existence may be attributed to the potential for pooling of ejaculate within the aforementioned dimples upon employment of coitus interruptus birth control methods during acts of sexual intercourse that involve rear-entry position-type sexual positions -- such as doggy style.
"Look at those sweet little cum cups on that show-piece grade model of ass"
"Pulled out from behind and filled her cum cups up like a Polar Pop from the Circle K!"
by SleapEesyFam June 16, 2018
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The dimples on a person's lower back right above the booty and on each side of the spine. Used to catch cum when a man unloads on your back/ass.
Damn, I'd like to fill her cum cups!
by IrishSprings February 07, 2017
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