A leftover smudge of cum found on the skin that has dried and began to flake off.
Would you like a wet towel for the cumscab on your chin?
by Bellzie July 28, 2010
1 more definition
noun: after blasting a fierce load, and if some is left to dry on the receiving person's body, a flaky, scab-like scratch-off will result.
I pulled out and blew my load all over the place! Later on that day, I saw a cum scab on that Trina's neck!!!
by IceHooker April 08, 2011