HAHAHA, This is what my brother did for his high school gradutation after party and he didn't washout the baltter for like 3 days and now it is completly molddy and discusting:P Wouldn't recomend for riding but deffinatly a funny idea
don't do Gatorade either. makes it all sticky and you wont get the taste out after wards. i like the idea though. might try that on light xc trails. of course it will be one of those cheap bladders.
beer will help regenerate the anti-bacterial layer in the camel back. i've had a few on rides too, not enough to make me tipsy, just a few. pretty fun.
-David