What makes you giggle?

Ah, Tim-my-brother. Years ago he worked as an attendant for a local gas-and-go convenience store, and one day when business was especially slow he filled out a fake gas theft report for his own amusement.

I saved it. Because come on, I had to.

For those who can't read his handwriting:

CIRCUMSTANCES: Someone decided not to pay for gas, so I destroyed them with balefire.

CAR DESCRIPTION: Charred smoking mass

LICENSE NUMBER: I didn't get it before I reduced him to a cinder

DRIVER DESCRIPTION: Extra crispy

Every time I read this piece of paper, I laugh until my stomach hurts. Every. Time. It's helped me kick minor bouts of depression, it works so well. I can't even explain why I think it's funny, except the first time I read it the whole thing was so random and unexpected that it hit the sweet spot in my particular sense of humor, which I've observed reacts pretty positively to ideas that come seemingly out of nowhere.

What kinds of things make you laugh? Have you noticed how your particular sense of humor works? (And if someone decided not to pay for gas, would you destroy them with balefire?)