In the fourth grade, on a military base in Texas, I used to ride my mothers bicycle off the base to the local comic book store, and spend my entire allowance on comics. I would then spend the rest of the week selling these comics to the rest of my fourth grade class, for double the cover price... I got to read all the comics, and made a healthy profit on them as well.
One day my teacher Mr Smith found out about my scheme, and confiscated my entire collection of comics. They weren't disrupting class, as I sold them before and after school, and I had them in a paper sack in my desk, like I did every week. I was as angry as a ten year old could get.

So I gathered all the money I had (ten bucks!) and went to the local commissary. I bought all the bulk penny candy I could. It ended up filling a grocery sack about half full. That's a LOT of candy. Then the next day, I smuggled it into the school.
I showed it to all the kids before the day started, and announced anyone who got yelled at, got a handful, and anybody who got sent to the principles office got FOUR handfuls.
Chaos ensued, as I sat back and watched, angelically glaring at Mr. Smith. On the second kid sent to the principles office, I got ratted out.

The principle sent for me and Mr Smith together, and someone else took over the class. Once in the office, the Principle asked me what was going on... I explained in detail, still angry, speaking in clipped terms what Mr Smith had done, and how I would keep making his life miserable till I got my comics book back, and I glared at both of them with little hands folded in defiance.
When they sent me out of the room, I could hear both of them break out in uncontrollable laughter.
I got my comics back.