Trails need to be reconstructed. Please avoid building trails that go uphill.

A gene can be either dominant or recessive, depending on which type of gene it is.

Teenagers are bored. By everything. Show a teenager an actual volcanic eruption, in progress, featuring giant billowing clouds of smoke, hot rocks raining from the sky, lava floes destroying entire villages, etc., and the teenager, eyebrows arched with sarcasm, will look at you and say, "Gee, this is swell," then return to the rental car, turn on his portable CD player, and listen to a band called Stomach Contents.

Technically, Windows is an "operating system," which means that it supplies your computer with the basic commands that it needs to suddenly, with no warning whatsoever, stop operating.

Hobbies of any kind are boring except to people who have the same hobby. This is also true of religion, although you will not find me saying so in print.

Do not spit gum in the drinking fountains.

The word aerobics comes from two Greek words: aero, meaning “ability to,” and bics, meaning “withstand tremendous boredom.