a interesting story............help me

this is a mean joke from my schoolmate.

Ben: Have you tried Italian food?

Joel: Yes, I have.

Ben: How about turkish?

Joel: Yes.

Ben: Japanese?

Joel: Of course.

Ben: Wow! You must be eating a lot! That's why you are so fat.

Joel: (Your mum is fat.) Yes, I have also tried Korean, French, Spanish and a lot more.

Ben: But I am quite sure you haven't tried the food that I 'm going to mention?

Joel: What food?

Ben: Have you tried Ethiopian food?

Joel: No!

Ben: Neither have they!!! Ha Ha!!