wedgie
n.— «Great bikes (for “wedgie riders”(tm)) if you enjoy riding a bike where the leather encased saddle is wedged between the cheeks of your butt giving you that wonderful pain in your backside.» —“Re: Recumbents (was: Is Touring Dying?)” by Morris Bisted Usenet: rec.bicycles.soc July 19, 1993. (source: Double-Tongued Dictionary)