1 definition by Cj00
It's a acronym used in prisons. It means Good Only On Friday. Way back when on fridays in the joint, shipments/mail would come on a friday. The prisoner who was good for nothing else would be good only on friday, when they had new smokes, or gifts, or whatever. You'd then procceed to beat them up and take their shit.
by Cj00 April 4, 2008