In college, my roommate decided to make jello shots in these little shot glasses we had. He and his buddies finished them off and stacked the empty glasses in the room. Ass of a roommate refused to clean them out, so they sat for a little more than a week, at which point I was sick of them enough to clean them myself.

The jello had crystallized around the rim of the glasses, cementing them together, and as I twisted a couple of them apart the crystallized jello sliced into my hand.

My wife still taunts me sometimes for getting cut by jello.

The distance light travels when it goes one meter.