gettin a slap from your mother, whose usually black with junk in the trunk. Happens when you misbehave or say something that you think is fine but yo mamma don't like.
Mark:Did you see what Lebron James told his momma to do?!
James:Yea "syad!!"
Mark: How'd he not get a momma slap for that one?
Anything that is so good it makes you want to slap your own mother (i.e., it brings you so much joy that even causing pain to your mother would not ruin it). Popularized by Bros BBQ and the “taste so good it make you wanna slap yo momma.”
A person who was jealous of you his whole life and then raped your mother, calling her momma cause she treated him like a son cause his mom was on a park bench