I spent a few years in a small-town farming community during high school. In science class we did the experiment where we cut small slivers of Sodium and Potassium and put it in water resulting in a volatile reaction.
Being teenage boys we procured a few of the large rods of those elements and one night we ran through town and threw it into fish ponds and fountains, even right in front of the police station. Those large chunks made some pretty loud bangs if I recall correctly. There was a lot of unrest in South Africa in those years so that type of thing did not go unnoticed by the authorities.
The downside of being in a small town was that it was not hard to figure out whodunnit. We never knew whether we were spotted or just by reputation, but the Security Police showed up at the school the next day and we were called, by name, into the principal's office.
The upside of being in a small town was that after the cops scared the daylights out of us, it was understood to just be teenage shenanigans and left at that. All we had to do was return whatever Ka and Na we had left and promise not to do it again.
One of the boys in our group had the remainder of the stuff but decided that it would be best to just bury it in his backyard. His elder sister was dating a local cop (not from the Security Police) and we all knew the cop well so we hatched a devious plot....
The cop arrived at our friend's house as he did everyday but this time he was not there to see his girlfriend. He "arrested" our friend saying that someone had tipped them off about the buried elements. He apologized that it had to be him that made the arrest but he had to follow orders. He took our friend to the police station and locked him up and explained the gravity of the situation as a Security related matter.
We went to the station and played along and spoke to our incarcerated friend through the bars. He was really scared - his father was the town Postmaster, well known and well respected in the community and the church.
Eventually the cop came in, opened the cell door and told him he had been setup. We all cracked up laughing but we had to start running really quick when he came out of that cell and came after us.
Small towns are great, or at least they were in simpler times.