Top definition
A piece of paper with sperm ejaculated onto it, then folded and sent to someone as an actual letter.
Dude 1: I heard Ms. Finke yelled at you today

Dude 2: Yeah, what a bitch.

Dude 1: You should get her back

Dude 2: Don't worry, I sent that ho a Cum Letter

Dude 1: Niiiice
by UnCoolBro September 23, 2010
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