Nude Cycling.

No, you really, really, don't want to be doing this:

Two Austrians and a German were fined for cycling naked along the banks of the River Danube in Serbia where a heatwave has sent temperatures soaring.

"Police arrived after being alerted by passers-by," said police spokesman Stevan Krstic in the northern city of Novi Sad.

Temperatures in Serbia and other parts of the Balkans have hovered stubbornly for the past week at around 40 degrees Celsius (104 Fahrenheit).

The there men were brought to a magistrate on charges of disrupting public peace and order and were fined 10,000 dinars (125 euros) each.

Think about the mechanics of it for a moment, please. Men, especially (there are entirely different problems for women). There are parts of your body that you really want to have controlled, packed away from danger, chafing etc.

Take it one stage further: would you ever want to cycle on a saddle that somone else had been using bareback?