A tale of 4 worms

[fatherted]

A tale of four worms.
In a School science class four worms were placed into four separate jars.
The first worm was put into a jar full of alcohol.
The second worm was put into a jar full of cigarette smoke.
The third worm was put into a jar full of sperm.
The fourth worm was put into a jar full of soil.
After one day, these were the results:
The first worm in alcohol --- died.
The second worm in the cigarette smoke --- died.
The third worm in the sperm --- died.
The fourth worm in the soil --- was alive.
So the science teacher asked the class --- "What can you learn from this experiment."
Little Johnny quickly raised his hand and said. "As long as you drink, smoke and have sex, you won't have worms."