I got a gash in my wrist that was deep enough you could see the muscle. It bled a lot, and didn't really hurt. It was my first injury where I actually had to go to the hospital. The scar is still nasty and sometimes it will hurt for no reason.
Second, I was eating this delicious, soft, white bread and I was intensely eating like a cow and bit my thumb really hard, that bruised the top of my thumb.
Third, I was on the playground when I was 5 on the monkey bars, jumped to the first bar, missed, landed face first in the sand. I still remember the pain and was trying extremely hard to hold back the tears. It bled really bad and a few kids that were walking by had to go to the nearest house for papertowel to help me. No adults around.
Fourth, I live in Canada. One day a couple years ago it got really close to -50. I was home alone, taking the bus. My parents were on a trip and I forgot my keys in the house, so there was another set underneath the barbeque. I really had no winter gear and my hands could barely move since they were so cold. There was snow in front of the barbeque so I couldn't open it due to my frozen hands. So I was outside in that -50 degree weather for a long time. I finally got into the garage and sat on the steps crying from the pain in my hands, and some spots were white and sparkly. (frost) I got the courage to go back to get the keys and got that damn barbeque open. My hands still hurt long after, and underneath my nails were bloody in some spots. I swear that was almost frost bite.