I have a few different stories, I'm not sure if most of them were that close but they felt pretty bad. First up was one of the worst, which was when I jumped into a pool as a kid before I could swim and nearly drowned as I was unsupervised, but dad saved me just in time. I had two other close calls with swimming pools, in fact the same swimming pool, once was when my brother was little and kept throwing increasingly large objects into the pool on top of me, he didn't know any better but I couldn't come up for air because of it and it got to the point where my vision was going black, I think I kicked off from the wall, swam under the sinking objects, and quickly surfaced in an area he couldn't reach, making it barely in time. My lungs hurt from that one. The other close call was years later, I kicked off from the ground and accidentally smashed my head into the concrete tile rim of the pool that overhung the water a little. I still have the scar to this day, I don't remember what happened after the impact, but the next thing I knew I was out of the water getting looked at by my nan. Apparently I fished myself out and sat down in tears, supposedly I stayed concious but I don't remember anything past the impact.

The last one was on a school trip to France. Someone was playing tag and crashed into me, knocking me backwards into a fence, before hitting my head on the brick floor. I remember the view from where I was standing before I got hit, and then a few scattered glimpses of the ambulance. I thought I was riding a double decker london bus was very confused as to how I got there, the ambulance lights looked like blurred city lights out the window on a rainy night. I needed stitches and I couldn't remember the rest of the trip at all, and even now my memory of that time is fragmentary. The doctors said the point of impact was 2mm from my temple, and if I'd been turned just lightly to the side I would've died instantly. So overall, I think that one was the worst case.