What is Chummin?
1.
Chillin, dickin around.
Girl: "Wanna chum with me?"
Boy: "Yeh, I'll call the posse."
See
2.
someone that eats out of control
he is chummin on that chicken.
3.
discarding waste to attract fish
A person sometime will cut up fish in a bucket to attract other fish to the area... Man what are you doing, "I'm chummin."
4.
Chillin with friends while eating lots of meat.
"Me and my buddies are chummin at Whole Hog BBQ today for lunch."
See