Green’s Dictionary of Slang

chumpie n.1

[SE champion]
(US campus/black)

1. something that causes happiness, joy or excitement.

[US]L. Pettiway Workin’ It 133: I get high by myself. I keep my own chumpy. I’ll get high with my girlfriend, but she won’t go on one of those marathons. [Ibid.] 134: I’m still gonna have my chumpy.

2. something exceptional, outstanding; a large amount.

[US]L. Pettiway Workin’ It 122: He got shot up in his legs [...] He’s got a big, big ... he got a big old chumpy like from right here to right here on his leg. A gash all the way down there. [Ibid.] 160: The shit I had to endure, it was a whole chumpy of misery.