Why is air a lot like sex?

Because it's no big deal unless you're not getting any!

What do attorneys use for birth control?

Their personalities.


What's the difference between a girlfriend and wife?

45 lbs

What's the difference between a boyfriend and husband?

45 minutes

Why is it so hard for women to find men that are sensitive, caring, and good-looking? Because those men already have boyfriends

What makes men chase women they have no intention of marrying?

The same urge that makes dogs chase cars they have no intention of driving.

What's the difference between a porcupine and BMW?

A porcupine has the pricks on the outside.

Why do men find it difficult to make eye contact?

Breasts don't have eyes.

Why do drivers' education classes in Redneck schools use the car only on Mondays, Wednesdays and Fridays?

Because on Tuesday and Thursday, the Sex Ed class uses it.

How do you get a sweet little 80-year-old lady to say the F word?

Get another sweet little 80-year-old lady to yell *BINGO*!

Lubricants for Wheels

Which Lubricant Works the Best for Hobby Wheel Applications? William Pete, 11, Lakeville, Minn. Discovery Education "Educator" Award, Discovery Channel Young Scientist Challenge, 2006

Project background: After participating in derby car races, William wondered whether any of the lubricants used on the cars' wheels might reduce friction more than other lubricants. He hypothesized that dry lubricants, such as graphite, would work better than liquid lubricants, such as motor oil.

Tactics and results: William mounted a single wheel on an axle. He designed a machine that made the wheel start to spin and then allowed it to rotate freely. He applied five lubricants individually to the connection between the wheel and axle. After each application, he set the wheel in motion and counted how many rotations it made before coming to rest.

William found that graphite gave the wheel the greatest number of spins, followed by graphite with molybdenum, silicon, motor oil, and white Teflon.

Finalist William Pete gets hands-on as he demonstrates part of his project.