Green’s Dictionary of Slang

catty-cat n.

[redup. of cat n.1 (2a)]
(US black)

1. the vagina.

[US]E. Folb Runnin’ Down Some Lines 232: catty-cat Vagina.

2. sexual intercourse.

[US]E. Folb Runnin’ Down Some Lines 161: Go out and get some scat, catty-cat.