Marco and Hassan are having a tour with their teacher David, and Hassan tips the guide a little too much…

Tour Guide: If you found my words helpful and interesting, please feel free to leave a few cents or dollars. Thank you.
Marco: How much did you tip him, Hassan?
Hassan: I gave him a $100 bill.

David: Really Hassan, that’s ridiculous! You can’t give someone a $100 tip!
Hassan: I’m sorry my teacher. For me, money is rubbish; and what do you do with rubbish? You throw it away.

Marco: If you’ve got any more of that sort of rubbish, Hassan, you can always throw it at me.
Hassan: Not at you, Marco, you are my friend.