Planking
Planking is the art of lying down with a stiff body on any random object. Planking originated in Australia and has now become popular. Planking is an evolution of parkour, it is for people who cannot do parkour and want to look "cool" by taking pictures of themselves planking. Planking is pointless, if you want do something useful, learn parkour.
Kid: "Yo' check out this picture of me planking."

Friend: "Oh, you're cool."

Kid: "Thanks, I know."