A policeman had just finished his shift one hot 4th of July evening and was at home with his wife.
"You just won't believe what happened this evening, in all my years on the force I've never seen anything like it."
"Oh yes dear, what happened?" she asked.
"I came across two guys down by the canal, one of them was drinking battery acid and the other was eating fireworks," the policeman said.
"Drinking battery acid and eating fireworks!!! What did you do?"
The policeman shrugged. "Oh that was easy, I charged one and let the other off."