We must all face the choice between what is right and what is petty. (source)
“I always brought two small sandwiches to school so I could have one at lunch and one in study hall since our teacher let us eat in that class. One day as I’m about to eat my sandwich, I get up to use the bathroom. As I walk back in the classroom, I see the kid in front of me eating my sandwich. I’m pretty annoyed so I confront him politely and he denies it completely. I left my sandwich on my desk the next day just to make sure it was him, and what do you know, it is. So on the third day, I hatched a plan.
“I put habanero cheese on my sandwich, and then doused it all in ghost pepper sauce. I leave my trap sandwich on my desk and get up to use the restroom. This time I take as long as I can, and end up wandering the halls of the school, because my study hall teacher would only let one guy leave the class at a time, even for water. After about 10 minutes I come back into the class to be greeted by the sandwich thief crying hysterically with a bright red face waiting for the hall pass. He was in the bathroom for the rest of the day.” – iwmcguy