When I was in the 3rd grade, the 5th graders had a science contest where they all brought in inventions and science experiments to compete with each other.

e switched classrooms every hour, and when my class entered the science room, there were various interesting science experiments that the 5th graders had brought in.

One enigmatic experiment was just a small suitcase. Out of curiosity, I picked up the suitcase. It turns out this experiment was to see if the 3rd graders would be curious enough to investigate the small suitcase science experiment. Inside the suitcase was a small motion detector which sounded a loud alarm when it was moved.

One panicked 3rd grader who had slightly peed his pants ran out of the room looking for the 5th graders to get help to turn off the alarm.

The successful experimental subject… had been me.