(Noun) A promiscuousperson who has indiscriminate sexual relations with damn near everyone.
Nikki's girl was such the cum-dumpster, and yet the clueless, naive idiot revered her like a queen while most reamed her like the easy, sleazy ho she was.
A Cum-Dumpster is a man who cums more than a normal. For example he would actually fill anyone up, even if he wore a condom. It would not be a good idea for someone to give a man like this a blow job because they would have to get their stomach pumped.
Synonym for whore. A woman who is sexually active, contains innumerable STD's, infertile, and lets the opposite sex cum inside of whatever hole they please.