19. Diseases

A: Take off your shoes and walk in the sand!

B: I'd rather not. I bought swim shoes.

A: That's no fun!

B: They're fine, and I can still get them wet.

A: Why are you so paranoid?

B: I read that you can get bad cuts on the beach!

A: How can sand cut you?

B: It's not the sand; it's what people leave in it.

A: You mean like trash?

B: Yes, and even broken bottles.

A: I guess swim shoes are a good idea.

B: Yes. You never know what could hurt you.