It is a nickname given by homosexual cowboys from the south to their fellow gay cowboys from the north. It comes from William Tecumseh Sherman, a Union general during the Civil War's nickname, cump, and cum dumpster. It is used as a flirty way to get into another cowboy's pants at the ranch.
Ceejay: Shucks, Andy, gonna make you into my Cump Dumpster when you come down to Atlanta.
Grant: Dang twang, fill my butthole with your cum, boy.
1. A man who dumps his cum in any open hole he can find
2. A man who has many sexual partners
3. A man with low standards of cleanliness
Cump (noun)
Men can be a cump, cumper, cumpster, cumpy:
"Ew. Don't date him. He's a major cump" - can substitute other words above like cumper, cumpster
"If you're horny, he's super cumpy and will doANYthing you want"