When you take a person's shirt, flip it over there head, and then proceed to take a knife and cut two eyes and a hole for them to see. (This can to be a friend, but to an enemy the next move is to trip and disable as many major muscle groups, with said knife.)
"Ayo did you hear !+-$## got a shuc last night?"
"Yeah lmao, he ain't out the hospital for a good month g"
Pulling one's shirt over their head and stabbing them repeatedly whilst they are disoriented
Steve: Man, did you hear how Darnell got a SHUC in that alleyway last week?!
Mark: Yeah