When I was young(er) a friend cut open a glo-stick and gargled it. "Hey, it says it's non-toxic!" The inside of his mouth glowed for a week. Related: Glo-stic

When I was young(er) a friend cut open a glo-stick and gargled it. "Hey, it says it's non-toxic!" The inside of his mouth glowed for a week. Related: Glo-sticks burst in a shower of (hot) glowing liquid when thrown in a campfire.