Use this when a sales person calls you at your home I saw this on seinfeld last night: salesperson calls. seinfeld: Hello? salesperson: hi would you be interested in blah blah blah. seinfeld: actually im really busy right now but if you give me your house number i can call you when im free. salesperson: i actually can't give you my home number... seinfeld: oh, because you don't want people calling you at home? salesperson: yeah, exactly. seinfeld: well now you know how i feel! (hangs up) i am definitly using this next time i get a salescall.