Gs can mean a multitude of things; its primary definition is good shit/great shit. One can be on gs in a plethora of was such as talking to someone of the opposite sex or just doing some dope shit.
“You see Josh rn??? That boy is on some gs”
Gs stands for good shit, but also can mean that you’re talking to someone of the opposite sex; in addition one may be “on gs” by doing something cool.
“Did you see Tom last night??? That boy was on straight gs.”
.The initials for the band Get Scared
Person 1: "I went to a GS concert last night, it was fire"
Person 2: "That sounds sick, I love Get Scared"
Gs is a reference to goat society , mainly known for its opuimness with their legendary plug Jordan or as they refer him as , “The One Who Will Save Goat Society”