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A volkswagon of any age size or color. Game played with children when driving for long distances. First person to see a punch bug yells "PUNCH BUG" and punches someone in the arm.
car: driving down the road
p1: sees a green vw beetle
p1: punches p2 and yells "PUNCH BUG!"
p2: OW!
by Deb April 08, 2004
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