A ring stand is set up with two rings, each holding a filter paper spread with nitrogen triiodide. The bottom filter paper is touched with a feather, causing an explosion that detonates the other sample of nitrogen triiodide. Close up views and slow motion of this very dangerous reaction are shown.

I older friend of mine said they would paint this on windows and let a fly loose and watch the windows break...

And sandwich it in between duct tape and let it dry and run it over with a car or stick it in door jam...

hehe *evil grin*