Probably getting hit in the groin while practicing cricket in the nets a few years ago. You get hit on the body fairly often and it always leaves a painful mark for the next week, but getting hit there, my God. It was against a fairly express pace bowler who was really pushing it through, and I missed the ball completely. Bang. The only way I can describe it is if somebody stood in front of you and hit you full swing with a sledgehammer. I was completely taken out, eyes watering, winded and it took me a good few minutes to get back to my feet. My legs were like jelly for the next half hour.

I was wearing a box, but let me tell you those things do nothing. My manhood was a black and blue mangled mess for the next few days. I was thinking about going to the doctor, and then it cleared up. In all not a good experience.