"Ponderings collection 07" joke

Why is there an expiry date on my sour cream container?

Why do we park on driveways and drive on parkways?

Why do we send cargo by ship, and shipments by car?

Why call it a building if it's already been built?

Why do kamikazee pilots wear helmets?

How do you know when it's time to tune your bagpipes?

Is it true that cannibals don't eat clowns because they taste funny?

Does' virgin wool' come from sheep the shepherd hasn't caught yet?

If the front of your car says' DODGE', do you really need a horn?

What do sheep count when they can't get to sleep?