Four worms were placed in four separate test tubes. The first worm was in beer, the second was in wine, the third was in whiskey and fourth was in mineral water.
The next day, the teacher shows the results to the class. The first, second, third worms were dead, and the fourth worm was alive and well.
The teacher asks the class "What do we learn from this experience ?"
A child responds "Whoever drinks beer, wine or whiskey doesn't have worms"
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