(Contest  Best punch line e-mailed to the Shopping Avenger will be rewarded by public mention in this space, plus a lifetime supply of Turtle Wax, if the Shopping Avenger can figure out what Turtle Wax is.)
The best punch line will not be rewarded by mention and won't receive a lifetime supply of Turtle Wax.
mnli hypothesis: The best punch line will not be rewarded by mention and won't receive a lifetime supply of Turtle Wax. premise: (Contest  Best punch line e-mailed to the Shopping Avenger will be rewarded by public mention in this space, plus a lifetime supply of Turtle Wax, if the Shopping Avenger can figure out what Turtle Wax is.)