ka-backhand
When you flip your wrist like a damn show-off and whack someone with your hand’s back side, screaming KA-BACKHAAAND like you just won the damn lottery, and it’s usually your dumbass ex or your cousin who won’t stop talking.
My cousin wouldn’t stop talking, so I ka-backhanded her and she shut up for a whole week.
My ex tried to text me, so I ka-backhanded him in front of his new girlfriend.
I ka-backhanded my boss when he gave me extra work on a Friday.