This video left us open-mouthed to say the least.

In a clip posted on YouTube, a man is shown leaping off the top of a skate ramp with, presumably his son, cuddled up in his arms.

As he takes off he loses control and falls off his skateboard, slamming to the ground on top of the toddler, and banging the little boy's head on concrete.

The shocked toddler then screams and cries before the camera is quickly switched off.

The video was posted online with the message:

"NEVER TRY THIS AT HOME. THIS AINT COOL!"

Shocking stuff, we hope the little lad is ok.