A teacher puts four worms 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 is dead.
The 2nd worm is dead.
The 3rd worm is dead.
The 4th worm, in mineral water, is alive and healthy.
The teacher asks the class: What do we learn from this experience?
A child responds: Whoever drinks beer, wine and whiskey, does not have worms!
