What is the craziest thing you have ever done?

Mine has to be a Sky Jump I did from the Macau Tower. Supposedly the tallest sky jump in the world. I know right - what was I thinking??? Upon getting to the top and standing at the edge did I realise, I didn't particularly have the urge to take a step off the tower to free fall down! So what did the instructor-guy do? Push me off, of course! YIKES! In hindsight glad i did it, but will probably never do it again.