Jack S.
Example:
Guy 1: You see that dude over there
Guy 2: Yeah
Guy 1: Bro he looks like he might be throwing a hissy-fit over some dumb shit.
Guy 2: He's probably a Jack S.
Guy 1: You see that dude over there
Guy 2: Yeah
Guy 1: Bro he looks like he might be throwing a hissy-fit over some dumb shit.
Guy 2: He's probably a Jack S.