I remember, when I was
very young, probably around 10, I tried to ride my bike while crossing my arms; i.e. right hand on left side of handlebar, left hand on right. I last all of about 5 seconds until I tried to steer the bloomin' thing - next thing I know I am lying in the centre of the road, with the imprint of tarmac right in the middle of my forehead.
I have
never dared to try it again in the 30 odd years since
Andrew