I'm sure there are dumber things I've done, but this story comes to mind first.

Growing up in AZ (an hour south of Tucson) I spent a lot of time riding my bike through the desert. Diamond Back rattlers were very common, so common I didn't have much fear of them. When I was around 8 or 9 I heard a rattle, went and found the snake under a rock and hit it with a yucca stick. I then proceeded to throw it over my handlebars and bring it home to show Mom. Mom was none to happy to say the least especially because the snake was not even dead.

She wouldn't let me go back outside until Dad came home and dispatched the snake properly that evening.