When someone of a gang approaches someone who he thinks is a memeber of the same gang, he will ask him to state his name, rank, set, and OG.
short for ganster check, or checking someones "gangster"

a system where a gang member will test anothers gang members knowledge of the gang codes in a disrespectful manor.

When you check if a lil nigga real or false flaggin'

When you question one's true G-status.
A G-Check can be a direct contradiction of what one person says because another believes that the speaker is not G enough for their statement to be valid. A G check can be reversed if the origional speaker performs said G check issued by the second person. A G-Check can never be a one sided statement there must always be a claim before the check.