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2.
Good Point Strong Argument; said when someone makes such a good point that it immediately reverses your stance on the subject at hand.
Man 1: Patrick Swayze fucking blows, he never made any good movies.

Man 2: Yeah Dirty Dancing and Ghost were uber-gay

Man 3: What about Road House?

Man 1: GPSA, Road House owns.
by Dick Ballistic January 29, 2010
 
1.
1. Ghetto public service announcement
2. a public service announcement done "the hood way"
3. used to communicate random ghetto messages
This is a GPSA:
We don't get fucked up no mo'
We Get WASTED..!!
by justcallmeLizzieMcGuire November 08, 2009