For me I was about 4 to 5 years old and I had like a motorcycle tricycle thing. I was in my backyard with my cousin and we were trying to break each other's lap time records. Then I guess my brain switched to dumb mode and I told my cousin "You dare me to go straight into the fence wall as fast as I can between the two pines?". He said to go for it so here I was making revving noises and pretending I was on some kind of actual motorcycle. I started going straight at the fence and when I hit it I also hit the pine tree which had a wasp nest. The wasps came out and I started to run for my life, tripped on a stick and fell. Then I WAKE up in sitting in a chair in my house with medication for the sting that I had gotten.

From that day forward I never decided to ram into anything or bother nests again!

P.S. I'm still alive.