How the fuck can you brake your jaw falling on your back ?

Skate boarders talk through their asses.

oh...shit...

he hit his face on his knee

That or Skateboard, eitherway, surprised they didn't notice.
"Talking through the ass" indeed.

i rest my case skate boarders teenage dickheads and id will say that at my local skate park as they all amo cocks and has been mtv scarred , shower of cunts the lot , mummy and daddy drop them top the ramp and pick them up just b4 dark , soft ass pecks !

...the fuck you say?