It was during my breath but fruitful "explosives expert" period... I was at school talking with a couple of friends saying how you could make a bottle explode by sticking drain cleaner and tin foil in it together... something I hadn't tried out yet, but wanted to. They didn't believe me.... these were new friends of mine you understand... Anyway, my lunch included a bottle of mineral water and a sandwich wrapped in tin foil... One of them told me that he could get some drain cleaner in that bottle from the janitorial supply closet nearby, I didn't believe him, they keep those things locked...
But, he said the lock was broken, he said not to follow him, and he pretended to leave the cafeteria area to go to the bathroom, and went into the closet, and came back with a bottle quarter way full of sickly looking liquid. At this point things were set in motion... and I was fairly horrified as we went outside, and we stood at one end of the courtyard while the particularly arrogant example of humanity who had gotten the liquid went over to a trash can, put the foil in the bottle, and although he seemed a little surprised that it had started foaming, he very non-nonchalantly put top back on and dropped it in the can... he came back to us... we waited... he calmly drank from his orange juice... After a while he asserted nothing was going to happen, and made his way back inside... as he's crossing the threshold back into the cafeteria BANG ... wait that isn't good enough
BANG
I really can't emphasize enough how frigging loud it was, my eyes registered what was going on in the next couple of seconds in an adrenaline fueled fervor. The lid of the can popped off, my friend had fallen over, his juice rolled away from him, everyone inside who despite being in plain view of us (but fortunately not the trash can) were now looking very disturbed... But what is still burned into my mind most of all, is the fact that the lid of the can landed in textbook comical fashion, rolling round on it's edges before settling down exactly as it was... A teacher ran to the door and asked us "What was that", "It came from somewhere over there" I said pointed in the direction of the trash can... He looked at it... there was nothing out of the ordinary in the courtyard to be seen.... "Must have come from over the wall" he said... and with that suspicion was lifted...
My friend had juice all on his pants... which some time later, struck me as weird, as there was no puddle from where he dropped it... I heard people talking all day about the mysterious explosion... They thought it must have come from a nearby street... It was by mutual silent consent that we never spoke about that particular subject ever again.