JSGG 

JSGG is the acronym of Just Some Game Group

JSGG started a server for Team Fortress 2.

JSGG by Admiral Death December 24, 2019

JSGG 

JSGG means Japanese School Girl Giggle. It replaces LOL in situations were you can't laugh out loud.

My friend sent me a funny text, while I was in class. I couldn't LOL, so I JSGG instead.

JSGG by UnofficialNinja May 6, 2014