A chemistry teacher wanted to teach his 5th grade class a lesson about the evils of liquor, so he proceeded with an experiment involving a glass of water, a glass of whiskey, and two worms.

"Now class...observe the worms closely," said the professor, putting a worm first into the water. The worm wiggled around, happy as could be.

He then put the second worm into the whiskey. It wiggled about painfully and quickly sank to the bottom, dead as a doornail.

"Now, what lesson can we learn from this experiment?" the professor asked.
Little Bobby, sitting in the back, raised his hand and wisely responded, "Drink whiskey and you won't get worms."