Travelled to school by public bus transport in Delhi.
Buses would be heavily crowded at times. Plus, as students were rowdy and would not buy tickets, bus drivers didn't like students boarding the buses, trying all sort of tricks to not let us board. So, we would have to board moving buses and will be hanging outside at the door lot of the times. This made already chaotic and dangerous travel (there used to be at least 100 deaths caused by buses every year) even more dangerous.

I used to capture spiders I found in my house and yard, then i feed them live wasp.

when I was in 5th grade of elementary school, my whole family moved from big city to another city where the nature close by, meaning the children often play in the river nearby.
I played with my new friends in the river without swimming ability and got carried away by the stream, drowned, ended up saved by the official, hospitalized for 2 weeks, and got a very noticeable scar on my face. Then we had to move back to the big city for my treatment.

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ꉂꉂ(ᵔᗜᵔ*)笑

lit a firework inside the house

Ran away from home in preschool, got lost in the forest, got found by a friend of my dads who got lost with me while trying to bring me home.
P.S During preschool I ran away from home 3 times, not counting the times I went missing for a few hours. Of course I never packed a bag, but I usually took some bread and home-made sweets with me.

biked around the neighborhood without a parent around by myself. Ended up getting very lost and there was a police search waiting for me when I finally found my way home on my own lol.

You mean stupid stuff I still do? I used to have these weird premonitions about tires and a few other things. I would zone out and could tell when something bad was going to happen and stare at the victim until it did. (For example, when I was little I stared at a cat from my porch until it got run over) So once in a parking lot, I was waiting for my sister to climb in first when I stopped to look down at the back tire. I stared at it and knew that pretty soon my mom would push the pedal accidentally, so I decided to watch it happen - and put my foot where I thought she would move it. Boom. Weight of entire car on my foot. It's not painful, just sort of anxious, like "GET IT OFF NOW" but you can't form cohesive words. That was dumb/dangerous. Then, at a distant relative's birthday there was a guy with an army grade taser. We kids passed it around and took turns seeing how long we could hold it on ourselves. It tickled.

I remember I had found a little mouse that was stuck to a glue trap in my home when I was in elementary. I had taken the time to free the mouse, clean him up, and put him in the box to let him go outside. While I was walking outside, the (ungrateful) mouse tried to escape and bit my fingers and wouldn't let go. I then waved my hands around while the mouse was still hanging on with his teeth, and I ran outside. He let go and ran into these bushes. I then tried to kick the bushes because I wanted him to die. Instead, I kicked my foot right into a rusty nail that was on a piece of rotten wood. Strangely, it didn't bleed or hurt. It feels normal there now. I guess I was lucky. Could've been worse O_O

Climbing Korin Tower to get the sacred water.

cartwheel down the stairs.

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"...that ain't no unicorn" - Wakusei no Samidare

As a kid I used to lit up matches and put them in my mouth. Lol. XD
Also when I was around 9 I rode a bike as a passenger (my neighbor gave me a ride), standing on the small tube-thingies in the back wheel of the bike, I fell and fainted, but it seems like I didn't learn my lesson because last year I fell off a bike and scrapped my hands because I was riding as a passenger. XD

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"Beware How You Take Hope From Another Man."

This.

Was chased by ducks and geese (you could say peck-attacked ) *runs so fast*
idk why they started to chase me ... out of know where they appeared right in my back
good thing it didn't became a trauma

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I haven't really done anything dangerous since I'm such a quiet kid.. but I'm prone to accidents. I just climbed the slide ladder and then slipped to break my arm, I was changing my clothes and slipped to fall in the pool, things like that.

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I'm guessing we're not talking about the illegal stuff?
Lol... seriously, this thread could get someone in big trouble. That's why I'm going to pretend I never saw this, nor am I tempted to add some real "dangerous stuff" done as a kid.

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Takagi Shigeyoshi, Suzuki Tsuta, Yoneda Kou, Ogura Miku