A: What's your email address? B: It's bluedog123. A: Bluedog123. Are you sure that's all? B: Yes. A: No. That's incomplete. B: What do you mean? A: What's your mailing address? B: 456 Cherry Drive, Pasadena, CA 91170. A: That's correct. B: So what's the problem? A: Bluedog123 is just the street. You have to give me the city, state, and ZIP code. B: Oh, I get it. My email address is firstname.lastname@example.org.