[MrJB]

Here's one - first, strip naked in whatever quiet spot you like. Then you are to take as many steps away from your clothes as you like.

The catch? Once you have walked away, you get 5 seconds per step to edge. If you can edge in the time you gave yourself, congratulations - go back and get dressed. If you run out of time? You have to take at least as many steps again, and try again to edge with a new timer