What's the difference between a blonde and a Porsche?

You don't lend the Porsche out to your friend.

What's the difference between a blonde and a computer?

You only have to put information into a computer once.

What is the difference between blondes and traffic signs?

Some traffic signs say stop.

Why are all dumb blonde jokes one-liners?

So men can remember them.

What did the blondes right leg say to the left leg?

Nothing, they haven't met!