The evils of liquor

A chemistry teacher wanted to teach his Secondary One class about the evils of alcohol, so he created an experiment to make his point.
Producing two glasses and towo small worms, he first poured s amall amount of water into the first glass.
Putting in the first worm, he asked the glass to observe it carefully. The worm swam about in the glass.
Then, he took the socond glass, and poured in a small amount of whiskey and dropped in the remaining worm.
The worm writhed about and samk to the bottom of the glass, quite dead.
"Now," said the teacher. "What can we learn from this experiment?"
One kid answered right away, "Drink whiskey and you won't get worms!"