A woman becomes a fuck buddy's cumdump when the relation becomes so much on his terms that she lets him come by for a quickie anytime he wishes, working around his schedule.
She thought the fuck buddy situation could evolve in a real relation, but she's delusional, he is treating her like a cumdump.

I have a girlfriend in upstate NY I go see on the weekends, but I have a cumdump over here when I need it badly. Sometimes once a month, and others three times a week, the beauty is that I can drop by anytime I want.
by JDfromTP September 18, 2017
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"Suck harder...ooh yeah I'm gona cumdump baby..." ....eeeww
by evie & len aka COR May 12, 2003
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A person who takes loads and loads of cum from a particualr partner.
That Mel is pretty cute. Too bad Cashman says she's his personal cumdump.
by Jiminy Criquette September 5, 2007
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