Definitions by The Judge94(2)

GBS 

game boy system (cover-up when someone asks you what GBS means, it really means gay butt sex{see entry 6})

Guy: Cole and Dalton had GBS with Bell and Layne last night.

Girl: What does GBS mean?

Guy: Oh, it means game boy system.

Girl: Ok, just wondering.

GBS by The Judge94(2) March 11, 2010