Everytime I watch this, it makes me crack up.  Hi-larious!

At first glance, your response might be haha, What on EARTH is this?  Which might evolve into a SERIOUSLY?  Why?  Then it dissipates into a quizzical hmm, wonder if I can do it!  Now that you're educated in the art of the plank, will you try it?  Planking in stupidity is not condoned here.  Apparently, some kid planked off building to his death.  Like anything else in life, please be smart, people.

The Turtle Plank.

Plank2

The Jeremy Lin Plank.

Plank

We also got tipped off, owling is the next big craze...

The John Owl.

Owling