Tubing down the Salt River..., Phoenix
Tubing down the Salt River Canyon. It sounds really cool, but so many people do it, it's been ruined. It's not that far from Phoenix, so everybody goes. The water is so polluted, it's gross. Since they let you bring a cooler full of whatever you want, the water is quickly saturated with urine & cigarette-cigar butts, trash, etc. But if you're really desparate, you'll probably get to see some drunk chicks showing their t.i.t.s.