​SCRIPT

A: 　You have tried many kinds of diet.
B: 　Oh yes, I have tried walking diet, swimming diet, yoga diet,
　　  banana diet, and tofu diet.

       The other day, I tried a “horse riding diet”.
A:    A horse riding diet!
       I've never heard of it.
       Did it work?
B:    Yes.
A:    Really?
B:    Yes, the horse lost 5 kilograms.