David Letterman's top 10 signs you spend too much time on twitter

10. You miss son’s soccer game waiting for Lady GaGa to post what she had for lunch 9. You answer the phone: “Twello?” 8. You’ve spent millions developing iPhone waterproofing technology so you can tweet in the shower 7. You haven’t touched your CB radio in months 6. You ask yourself, “What would Jesus tweet?” […]