This stunt video of this kid fooling around on the crane will literally make your palms sweat.
View this video on YouTube
I can't condone this kind of activity, but I do give the camera person immense credit for following this maniac up there to shoot this video.
Here this MANIAC is going ONE-HANDED!!!

Balance beam over the city:

Here's his POV:

Monkey Bar Style:

I can't say it enough. Don't ever do this.