It was Mark Twain who said "children tell all they know and then stop."

One horsepower is the amount of energy it takes to drag a horse 500 feet in one second.

You can listen to thunder after lightning and tell how close you came to getting hit. If you don't hear it, you got hit, so never mind.

When they broke open molecules, they found they were only stuffed with atoms. But when they broke open atoms, they found them stuffed with explosions.

When people run around in circles, we say they are crazy. When planets do it, we say they are orbiting.

Most books now say our sun is a star. But it still knows how to change back into a sun in the daytime.

A vibration is a motion that cannot make up it's mind which way it wants to go.

Many dead animals of the past changed into fossils; others preferred to be oil.

Vacuums are nothing. We only mention them to let them know we know they're there.

Some people can tell what time it is by looking at the sun. But I have never been able to make out the numbers.

I'm not sure how clouds are formed. But the clouds know how to do it, and that is the important thing.

In making rainwater, it takes everything from H to O.

Rain is saved up in cloud banks.

It is so hot in some parts of the world that the people there have to live in other places.

A census taker is a man who goes from house to house increasing the population.

The future of 'I give' is 'I take.'

A virgin forest is a forest where the hand of man has never set foot.

The parts of speech are lungs and air.

The inhabitants of Moscow are called Mosquitoes.

Most of the houses in France are made of plaster of Paris.

The spinal column is a long bunch of bones. The head sits on the top and you sit on the bottom.

We do not raise silk worms in the US because we get our silk from rayon. He is a larger worm and gives more silk.

One of the main causes of dust is janitors.

A scout obeys all to whom obedience is due and respects all duly constipated authorities.

One by product of raising cattle is calves.

The four seasons are salt, pepper, mustard and vinegar.

The word trousers is an uncommon word because it is singular at the top and plural at the bottom.

Syntax is all the money collected at the church from sinners.

The blood circulated through the body flowing down one leg and up the other.

In the spring, salmon swim upstream to spoon.

Proof enough, when you want a decent explanation, just ask a child!