When you have pants that have so much goddamn jizz on them that they might as well be made out of semen.

A person who has a big nasty spot of semen on their pants.
Alan: That was a huge load! I've got crazy cumpants now!

Greg: Linda dry humped the hell out of me.
Thomas: No shit cumpants.
by D-Li Llama February 16, 2010
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