There's only one option

Finally Eric tracks down the box of spare clothes that he knew was in the store room and begins to dig through it. As he looks, his heart begins to sink. There's several shirts, a pair of socks and for some reason, even a bra. What there isn't however is a pair trousers.

Right at the bottom of the box Eric lets out a sigh as he pulls out the only item of lower half clothing in the box. A knee length floral skirt. It would at least be better than running through the mall to get to his car in his boxers wouldn't it?