This made me laugh.  I can picture my friend Don (another clown) doing this:

The man who hopes to be the first clown in space, Cirque du Soleil founder Guy Laliberté, said Tuesday he would tickle fellow astronauts as they sleep aboard the International Space Station,” Associated Press reports. The clown told reporters he had been tickling his fellow astronauts during training.

I wonder how the other astronauts are coping with this.

via First out the airlock, fighting germs, stressed koalas – The Globe and Mail.