1. Testicles.

2. Pac Man.

3. A naked Jester in white face.

4. Fake Pregnant Fake Nuns.

5. Scooby Doo.

6. "Quiky," the Nesquik Bunny.

7. A fuckin' Donkey.

8. "Foamy" the Fire Extinguisher, a Chef, and a Gorilla.

9. Einsteins.

10. An Easter Bunny, posing as Usain Bolt (ugh).

11. A Big Mouth Billy Bass.

12. A Giant Woman's Face.

13. Fozzie Bear.

14. A Bag Lady.

15. Road Kill.

16. A Fish.

17. "Pam Anderson".

18. Mr. Clean (note eyebrows).

19. A "Running" Refrigerator (GET IT?)

20. A Fucking Hippie.

21. A "U" Tube?

22. Speedo Cowboy & Indian.

23. A Pilgrim.

24. A Cymbal-Banging Monkey.

25. A Rhino (excused, because great cause).

26. The Dukes of Hazard.

27. "Paris Hilton".

28. Fred Flintstone.

29. American Gothic.

30. Napoleon.

31. Hamlet.

32. A Tiger.

33. BFI-branded portable shitters.

34. A Shitting Runner.

35. A Whoopie Cushion, with sound (asshole).

36. A Nerd.

37. Fake Gump.

38. Beer Drinking Cups.

39. I don't care how much it hurt, I would get ahead of these guys, NO MATTER WHAT.

40. A Caveman. (Note: Abebe Bikila won the 1960 Olympic marathon running barefoot.)

Much Thanks...
...to Best Race Costumes for collecting most of these. They update frequently, visit them!