* Did you hear the one about the un-stamped letter?
– You wouldn’t get it.
* What starts with a P, ends with an E and has millions of letters?
– Post Office!
* What travels around the world, but stays in one corner?
– A stamp.
* Where do ghosts mail their letters?
– At the ghost office!
* Why don’t you stamp e-mails?
– Your foot would break the computer screen!