betcha cant!

This will boggle your mind. And you will keep trying at least 50 more times to see if you can outsmart your foot, but you can't.
While sitting, lift your right foot off the floor and make clockwise circles.
Now, while doing this, draw the number '6' in the air with your right hand.
Your foot will change direction. Try and stop it from changing direction. You can't! Enjoy!
and i betcha cant lick your elbow either.

I know I can't lick my elbow, so I won't try, really… I won't…

clockwise in the air then a number 6, but a six is anticlockwise, your foot has to change directions.

I can only draw the 6 with my right hand if i start in the middle of the 6 and then go up (but I guess that would be cheating!)