Not worried or bothered by another person, their actions, or their property.
A dude walks in to a club with his wingman and a girl immediately checks him out Wingman: She's all about it. You should knock her down.
Man: I ain't stuttin dat ho.
Someone is talking alot of shit after a hard foul on the basketball court
Foul Perpetrator: I ain't stuttin you nigga.
Someone is wearing a nice grill and people are all on it Person 1: That grill is cold!
Person 2: I ain't stuttin that shit.