have you ever tried to wipe you a**e with your opposite hand...Cannot belive no one has mention the one on p8ntballer
http://www.p8ntballer.com/classroomcontents/t22042007.shtml
I did this and now can play left handed, do everything you usually do with your right hand but with your left. Such as drinking. Talk on your phone left handed. Change the channel with your left hand. Doodle with your left hand.