Pittsburgh Mayor Luke Ravenstahl and San Diego Mayor Jerry Sanders have agreed to the terms of a friendly wager for this Sunday's NFL playoff game between the Steelers and Chargers.

If the Steelers best the Chargers, Ravenstahl will send Sanders a Steelers' jersey and winter cap, and a pair of skis donated by Willi's Ski & Board Shop. Sanders must then return to Ravenstahl a photo of himself wearing the Steelers' gear and holding the skis at the Sea World Penguin Encounter.

If the Chargers win, Sanders will send Ravenstahl a pair of Chargers' swim trunks and a jersey, and a surf board donated by Bob's Mission Surf Shop. Ravenstahl must then return to Sanders a photo of himself in the Chargers' gear, standing with the surfboard in front of one of Pittsburgh's famed Three Rivers.

"I'm sure Pittsburgh fans will appreciate Mayor Sanders decked out in Steelers gear," Mayor Ravenstahl said. "On his way back from the Penguin Encounter maybe he can stop at one of San Diego's Steelers' bars and watch us in the AFC Championship game."