When you see someone who looks like someone else (or something else) & you tell a friend. If he agrees with you then He will say "Good Shout".
It is most common on a night out however can take place anywhere at any time.
the nigga that cant keep a consistant streaming schedule.
the nigga that is a familly friendly youtuber
the nigga that know one knows who hosted him
the nigga that will bust ya ass and put u on the tiky