You cannot do two things at once

[andrewducker]

While sitting at your desk make clockwise circles with your right foot.

While doing this, draw the number "6" in the air with your right hand.

Your foot will change direction.

Comments

heh

[josephgrossberg.livejournal.com]

I did. And not only that, my foot changed direction before I even started to draw the "six", right when I decided to do it.