(v 1) When a female interferes* with someone, typically a male who is getting acquainted with, conversing with, or hooking up with a member of the opposite sex.
(v 2) any action that impedes or stalls another's "game", "mack", or "pimp manuver"
(n) any female one who prevents another person from getting to know someone.
*Often intentionally
(1) Jim was talking to Lisa. That is until Jims little sister twat blocked him when she asked why he needed two girlfriends.
(2) My ex-wife twat blocks me every chance she gets. I hate her.
Noun:
a short-term sexual episode with a woman the purpose of which is to make sure that the fit of the twat hasn't been tampered with (i.e. by another man's dick. a.k.a.
A booty call.
A way to keep the pimp hand strong
I hadn't seen my jump off all week, so she was due for a twat check.