Dr. Sneaky's beer-in-your-pants Sneaky Shorts
Stuff like this is just as scary as innovative; we sincerely doubt someone isn't going to get some mad weird looks when cruisin' around with 24 ounces of fluid in their pants, but if you're really into being lazy and cheap you could probably make the $20 Dr. Sneaky's Sneaky Shorts pay themselves off in no time. And for maximum efficiency, don't forget to pick up a wearable catheter system, too.
[Thanks, Adam]