Four earthworms are placed in four separate test tubes:
1st in beer
2nd in wine
3rd in whiskey
4th in mineral water
The next day, the teacher shows the results:
The 1st worm in beer, dead.
The 2nd in wine, dead.
The 3rd in whiskey, dead.
The 4th in mineral water, alive and healthy.
The teacher asks the class:
– What do we learn from this experience?
And a child responds:
– Whoever drinks beer, wine and whiskey, does not have worms.