Synonymn for slut.
One whom you would imagine to be containing enough semen within various orifices of their body to fill a receptacle of some kind, such as a bucket.
A person, mainly females, who sucks a lot of dick and gets cumm all over their face. This happens happens to them them a lot making them "rusted", therefore bringing the name rusted cum-bucket.
David: "Damn I heard that girl over there has been jizzed on hella times."
Ludin: "I know shes a real rusted cum-bucket!"
A gang bang of about 10 or more men where they all produce semen into the recipients' vagina and get the recipient pregnant. Whoever is the baby's father is the winner.
"Hey, Stacy. I can't go out tonight. I'm gonna be doing the Cum Bucket Challenge with some friends."