Top Definition
cum burn occurs when sperm is left on the skin long enough to dry, causing the person to rub long and hard enough to irratate the skin turning it a red sun burnt color
(1) I seen a chick who had massive cum burn on her face today.

(2) Put your shirt on dude, you got cum burn on your back.
by Random C October 19, 2009
2 more definitions
When a man cums so much in a day that his cock has a workout- like burn.
I jerked off twice yesterday and fucked Susie three times, my cock has serious cumburn.
by Eddie O Spaghetti O February 28, 2009
When a man ejaculates so many times he gets a work out burn, but within his cock.
Yo man I had so much sex last night i got cumburn today.
by Eddie O Spaghetti O December 21, 2008

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