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1.
Calling someone a not very bright vagina, or just a dumb cunt.
Your are such a cumdunt, i can't believe you couldn't figure that out.
by Rusty Bedsprings November 26, 2005

Words related to cumdunt

cunt daft dumbass idiot stupid vagina
 
2.
Reversing the first letters of two words, Dumb and Cunts, whilst screwing it up entirely with a play on words to describe stupid women doing something stupid.
"You see those girls twerking over there? Typical Cum Dunts"
by WarheD September 04, 2013