Have you looked into loose fit shorts.
http://www.performancebike.com/shop/...tegory_id=1122
Should look pretty cool to the high school crowd. They're big with the mountain bike people I know. Now if you going to ride on the road and you want to help wind resistance and such, all I can say is suck it up and just ignore those people that don't know their butt from a hot rock.
Good luck,
Steve "cycling bibs for me thanks"