Buzz·Posted on Aug 21, 2014An Arbitrary Ranking Of Demetri Martin's Visual Jokes"How fast does a zebra have to run before it turns gray?"by Erin ChackBuzzFeed StaffLinkFacebookPinterestTwitterMail 23. The lifecycle of an R: 22. Change machine: 21. Ship in bottle: 20. Shapes: 19. A circle with two lines: 18. Pie chart: 17. Wall of China: 16. Mug: 15. Drawing mountains: 14. The alphabet: 13. Head in hands: 12. Starfish: 11. Softball: 10. Love: 9. Magician's to-do list: 8. A-hole: 7. Self portrait: 6. GPA vs. Limbs: 5. Ants, bears, people: 4. Skull & crossbones: 3. Circles and letters: 2. CD or boob: 1. Success: For more Demetri Martin drawings check out his books Point Your Face At This and This Is A Book.