Pebble Without A Cause

I’m a middle school teacher. One day during class, a kid removes his shoe and dumps a bunch of pebbles right on the carpet.

Me: “Why didn’t you do that over the trash can?”

Student: “You know, there’s this new, amazing invention called a vacuum cleaner.”

I’m so impressed with his ingenuity that I allow him to spend his free period demonstrating this new invention in my classroom.