There are two things worth noting about riding a bike with no hands:
1. There is zero reason to do it other than to show off. If you want to scratch your head, you can use one hand. If you want a drink of water -- again, one hand. Even if the rider isn't actively waiting for hot girls to pass by until he starts his hands-free pedaling, he still very consciously wishes that someone would see him in all his glory. There's really no question about it.
2. I do it fairly often.
