Green’s Dictionary of Slang

fruiting n.

[fruit n. (3)]

(US black) promiscuity.

[US] ‘Jiver’s Bible’ in D. Burley Orig. Hbk of Harlem Jive.
[US]Maledicta VI:1+2 (Summer/Winter) 131: Black slang (where things get all confused: butch = ‘female homosexual’ and cock = ‘a black girl’s sexuality or organ,’ fruiting = promiscuity).