Green’s Dictionary of Slang

pokey n.1

[poke v. (1)]

1. (orig. W.I. teen) the vagina.

[WI]Allsopp Dict. Carib. Eng. Usage.

2. (US) a penis.

[US]R.H. Rimmer Harrad Experiment 48: If they let you go all the way, it’s like playing Russian Roulette [...] Let them play with your pokey . . . but be darn careful where they put it!