Three girls in a convenience store march up to the cashier with three bottles of soda. They hike up their skirts and seem to flash the cashier, who then hands them each a bag of free merchandise.
Thinking it's some sort of convenience store Mardi Gras without beads, two boys watching nearby decide to try the same idea. Marching up to the counter too, they slide their half-drunk bottles of Coke forward, turn around, drop their pants to "moon" the cashier with a rear exposure.
While facing the opposite direction, the boys notice one of the girls reveal her "Coke Card," explaining why they received such a discount. The boys, with their butts still revealed, are embarrassed.
The ad earns an Equal rating because the cashier is more puzzled than offended at the suggestion that he might be aroused by their plan. (Guess they'll have to pay, unless the girls help them out.)