1 definition by CS Buchanan

Top Definition
Is when someone picks a victim (esp. for racial reasons) and places the victim's jaw on the curb of a sidewalk and usually ends up killing the person by smashing their head by the stump of the foot.
The scene from American History X, when Edward Norton stumps the African American male's jaw on the curb from the head is an example of a "Philadelphia Smile".
by CS Buchanan July 13, 2006
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