I was waterboarded, except for the board

By this I mean, I actually thought I was drowning. I was closer to it than most waterboardees are, because I was in danger.

What happened is this: I was a kid, about 8 years old and learning to dive. Showing off, actually. I dived into about 8 feet of water, went straight to the bottom, moved my arms to my sides, and clunked my head on the bottom of the pool. Of course, I opened my mouth to take a deep breath so I could howl, and breathed in, oh, about half a swimming pool of chlorinated water.

I was in much worse shape than those terrorist suspects.

However, my father, noticing that I had failed to surface, after a decent interval dived into the water and fished me out.

All that was missing was the board. Still, I can claim to have survived this horrendous experience without physical or mental harm. Except that I do not like to dive to this day.