Snowboarding woes

I think everyone has that one point in time when they sudennly realize that they can't do all the things they can when they were younger.  Mine occuered this past weekend while I was up at Perfect North Slopes in Indiana pretending to snowboard.  I just recently started to pick this hobby up due to my younger cousin ranting and raving about it.  I always wanted to try it so i thought what the heck i'll go.  It being so late in the season I got a deal on all my equipment, board, boots, bindings, etc.. I figured if I couldnt stand the sport at least I would be able to get my money back out of it since several of my friends wanted to buy my setup.   So here i am at the top of the beginner slope trying to watch what everyone else does and mimic it.  My cousins showing me some pointers and do/dont's so I dont break my neck (or my board just casue he wants it).  I actually make it down the hill on my very first try but stopping was a totally different story.  My head starts to inflate a lil bit after this and I try the same slope again, this time a lil cocky..except for the whole stopping thing.  15 feet down, then I fall, face first with my legs goin over my head tumbling down, goggles split my cheek open from the force of the impact.  After an afternoon of falling I finally get the hang of it and the local snowboard teacher or whatever they call themselves says that he hasnt seen too many pick it up as quick as I did.  Nice ego boost!  The next morning im sooo stiff that I can barely get outta bed and walking up stairs is a choir unto itself.  The phone rings and its my cousin asking if I wanna go again today.  Hell no! I can barely even move, he scoffs at me callin me old and that he'll be back later for some GOW.  Smart ass youth!  At lest I can kick his ass in Gears!