Gay Boys - a forever lasting clique of awesome guys who play madden, gamble at HP, eat el chato, and most importantly, suck dick (see word SD)
Normal person: Dude, let's go hit on some girls on main street, maybe makai or barcopa
GB2: Nah, I am going home to jerk off , play madden and sleep
GB3: Down to get on madden
Normal person: You guys are true GBs
"gb" simply means "goodbye"
No, it doesn't mean "gay boy" and it doesn't mean "gbone". It's just an abbreviation of goodbye. so be aware that if someone writes it it's not cause it'scoming out of the closet.