DENVER (AP) — Tourists who fly to Colorado to try legal pot can forget about buying souvenir boxer shorts, socks or sandals with a marijuana leaf on them when passing through the Denver airport. Airport executives extended the ban this month after a retailer sought a free-standing kiosk to sell the boxer shorts and similar items that played off Colorado's place as the first state to allow recreational marijuana sales. The spurned retailer is mulling a lawsuit, noting that the souvenirs are legal and that the airport already has a large exhibit celebrating craft brewers, whose product, like marijuana, is legal only for people 21 and older. "Why is everybody so riled up about the picture of a plant?" asked Ann Jordan, owner of High-ly Legal Colorado, which makes the shorts, socks and "pot flop" sandals that are already sold in Denver-area music stores. The U.S.