"It's commonly believed:"

- The four seasons are salt, pepper, mustard and ketchup.

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

- The future tense of "I give" is "I take."

- The parts of speech are lungs and air.

- That H2O is hot water and CO2 is cold water.

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

- A city purifies its water supply by filtering the water then forcing it through an aviator.

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

- We do not raise silk worms in the United States because we get our silk from rayon.

- To prevent head colds, use an agonizer to spray into the nose until it drips into the throat.

- The climate is hottest next to the Creator.

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

- In spring, the salmon swim upstream to spoon.

- Iron was discovered because someone smelt it.

- In the middle of the 18th century, all the morons moved to Utah.