Other things that come to mind:

A friend visiting for the first time. My brother fooling with a sheath knife. "Spread your fingers," he says to the guest. The guest does. THUNK! he throws the knife and sticks it in the wall between the fingers. For some reason the friend stayed a friend and even continued to visit.

The city took an island in the Mississippi River for a park, then forbade people from going there after dark. A railroad bridge crossed the river, the tracks ran across the island, and then across another bridge. We'd go to the Missouri side of the river, park the car, and walk back across the bridge. This doesn't sound like much, except to do so you had to climb down a ladder on the *outside* of the bridge, then swing onto a catwalk on the inside of the bridge and all the while you were about thirty feet above the river. At the island end you reversed the process. While on the catwalk you were between two steel walls with no light except that which reflected from the surface of the water -- since we couldn't use flashlights, we used the light from cigarettes to see by. One night we carried a bunch of fireworks and homemade "fireworks" to island, set cigarettes as time fuses, and were halfway back across the river when the commotion started. The police never did twig how we did it, I think.