1 definition by debbi harry
Noun: When two people (generally females) get mad at each other and slap the others vagina really hard.
Casey: dude i can't walk...
Janis: Why? twat slap?
Casey: This bitch just twat slapped me over the last twinkie.
Janis: Why? twat slap?
Casey: This bitch just twat slapped me over the last twinkie.
by debbi harry February 2, 2011