A Cum Dumpster is a woman or group of that only serve society by playing a key role of removing cum from the environment. This can be done by anal, vaginal, oral, ear, belly button, hand (as long as hand is then licked afterwards) intercourse. This does not apply to gays because gays do not exist, they are a government conspiracy. See Jenna Jameson.
Jeff was tired of useing lotion and his gym sock, so he called neighborhood whore Liz Smith who is a well known Cum Dumpster.
by Mfbigtaylor March 22, 2007
A woman who engages in an unprotected gangbang and takes multiple ejaculations of semen into any one or more of her orifices (anus, vagina, mouth)
4 of us gangbanged this cum dumpster last night... she took 4 loads in her pussy before we were through with her.
by ALSlut July 10, 2008