I saw this in Reader’s Digest,

- On the last day of school, children were bringing gifts to their teacher. The florist’s son brought the teacher a bouquet. The candy store owner’s son brought the teacher a pretty box of candy. Then the liquor store owner’s son brought a big, heavy box. The teacher lifted it up and noticed that it was leaking a little bit. She touched a drop of the liquid with her finger and tasted it.

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