What's funny?

A guide was showing an old lady round a zoo.

"Here we have a native of Australia," he said, taking her to the kangaroo's cage.

"Goodness," the old lady replied in shock. "My grand-daughter's married one of those!"

Customer: Do you call this a full meal? You served me twice as much yesterday.

Waitress: Where did you sit yesterday?

Customer: By the window.

Waitress: Oh, that's why. We do that for advertising purposes - it gives people passing by the impression that this is a good restaurant!

Gappu: Ha, ha!

Nippi: What's so funny?

Gappu: Well, I was thinking ...

Nippi: Yes, you're right - that is funny!

Monica: Has your sister had her baby yet?

Ruchika: Yes, she sent me an e-mail, but she didn't say whether it was a boy or a girl, so I don't know whether I'm an aunt or an uncle!