William Tell: You're doing it wrong!

Looks like he played Call Of Duty a little too often.

She is 86 yo and performs an impressive parallel bar demonstration.

I've never had a car key in my foot before but I think it's pretty painful...

No matter what they try, they can't succeed in breaking it.

Demonstration of NeverWet, the product that will keep all your fabrics dry.

The inventor's demonstration doesn't go as planned.

So he didn't smash the car window, but he did manage to brake the bricks under it. That is one stron...

But after this failed demonstration, she'll probably won't bother her son to take it again, lol.

You have to hit the wood, not the person helping you...

How you DONT use a flashbang grenade, demonstrated by the Norwegian army!