when someones underwear is yanked up sharply and causes pain. There are many types of wedgies such as the melvin (when the front of your underwear is pulled up), a jock lock (were ur undies r pulled and then your legs are bended back and then ur feet are put thro the holes), a hanging wedgie (were ur undies r hooked onto something high like a coat hanger) and there r lots more! Most people love wedgies and i suggest u try them, also spanking your self whilst in a wedgie is good. wear tighty-wightys, boxers, thongs and other things like that! you may also like to try making your own pants for wedging. By some strong thin dental floss and some elestic and tie the floss to the elestic so that there are holes for your legs then start yanking! not everybody will like them but they might be good at the start of s.e.x. or to turn someone on or durring a strip tease or something (private strip tease) and if u want to wear some sort or stretchy thong or g-srting (or micro-thong) and have a shoulder wedgie in front of collegeous!!!