Back in the day, when I was a little younger & much more foolish, a friend mentioned that he had discovered a nearly full box of 'stumping' dynamite stored in an old car on his recently purchased property. At that time, I had a few large stumps on my land that I wanted to remove, so my friend said I could have the dynamite for the taking.
The next day, I drove to his farm, about 200 Km, loaded the box of dynamite into the trunk of my car. He also presented me with a small cardboard box of about 50 blasting caps, and a roll of fuse wire. We chatted for a while over coffee, then I drove back to my place, where I unloaded the box, and belatedly decided to examine my prize.
When I opened the box, I nearly fainted, because the dynamite was liberally crusted with crystals, which I realized, (not being entirely ignorant, merely stupid), were nearly pure nitro.
I gingerly closed the box, carried it slowly and carefully into the backyard, placed it ever so gently on the lawn, and phoned the bomb disposal unit....
"Um, would you guys mind coming to remove a box of old, sweaty dynamite?"
Later, I assured the officers there was no more dynamite in my friend's old car, but they went and took a look anyway.
I think I aged about 10 years that afternoon...