Used to describe a sexual act, intimate congress, or jes' gettin' some.
1. Sexual intercourse or variations of same
2. Genitalia viv a vis sex.
Willis : It been so long since I had some whatzit - if I saw it, I'd throw stones at it !
Gus : Dang, dude - if I don't get my steady whatzit, I'm crabby and my face break out !!
Willis : Word.