Coworker to office administrator: Why did you send me this e-mail twice?
Office admin: Because they sent it to me twice.
Coworker: So why did you send it to me twice?
Office admin: Because I thought it would only take you five seconds to delete.
Coworker: Didn't you look at it before you sent it to me?
Office admin: Yes… but I didn't send you the pornographic e-mail that came in before that one!