15. Nice Doggy

A: I want to be a mail carrier when I grow up.

B: Why?

A: Because you get to meet a lot of people.

B: You sure do.

A: And you get a lot of exercise every day.

B: That's the truth.

A: And you get to play with a lot of dogs.

B: Well, you're supposed to be working.

A: Yes, but I will always pet the friendly dogs.

B: What about the unfriendly dogs?

A: I think if you are friendly to dogs, they are friendly to you.

B: Dogs are like people. Not all of them are friendly.