As much as I love a good joke. I'm also a lover of physical comedy. Let's face it, falling down can be funny. I bet we all have stories of at least one time we or somebody we know fell down.
It's such a helpless feeling to all of sudden realize 'OMG' I'm going to hit the ground or floor or down the steps...or even up the steps. Ever fallen up the stairs?! Damn you feel so out of control and ultra clumsy.
Fortunately for most of us the act of falling is over in a moment yet sometimes a memory for a life time.