A S.T.G is a rapidly spreading contagious disease flooding the lower mainland. people everywhere are catching it and there is no cure, once you've caught the S.T.Gs your fucked. your A Squid Tuna Goof the bottom of the barrel bottom feeding waste of skin that some of us have the luxury of dealing with day to day or possibly even calling them our friends. you can't get lower than a S.T.G and once you've got it theres no turning back
Sexually Transmitted Girlfriend. A girl who if you fuck she's gonna try and cuff you. The risk of getting cuffed after fucking a crazy girl who just came off a break up.