If someone asks for your phone number and you don't want to give it to them, get rid of them discreetly by giving them the number for the rejection hotline. They'll think it's your number until they dial it up and hear this prerecorded message: "The person who gave you this number obviously did not want you to have their real number. Maybe you're just not this person's type.... This could mean short, fat, ugly, dumb, annoying, arrogant or just a general loser. Maybe you suffer from bad breath, body odor or even both. Maybe you just give off that creepy, overbearing, psycho-stalker vibe. Maybe the idea of going out with you just seems as appealing as playing leapfrog with unicorns." In LA the number is (310) 217-7638. (From LA Times article
... Requires registration). Check out the website of the Rejection Hotline
to find the number to call in your city. They also provide phony business cards.