Top Definition
1. An idiot, douche bag, dumbass, or moron. Literally, a person who's is so stupid it's like their cranium is filled with jizz and no brain.

(Variant of numskull)
Dude: You brought me a Pepsi when I specifically asked for a Diet Pepsi, you cumskull!
by Mr. Filbert October 24, 2007
8 Words related to cumskull

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