1. Ratio of an igloo's circumference to its diameter = Eskimo Pi
2. 2000 pounds of Chinese Soup = Won ton
3. 1 millionth of a mouthwash = 1 microscope
4. Time between slipping on a peel and smacking the pavement = 1 bananosecond
5. Weight an evangelist carries with God = 1 billigram
6. Time it takes to sail 220 yards at 1 nautical mile per hour = Knotfurlong
7. 365.25 days of drinking low calorie beer = 1 Lite year
8. 16.5 feet in the Twilight Zone = 1 Rod Serling
9. Half a large intestine = 1 semicolon
10. 1,000,000 aches = 1 megahurtz
11. Basic unit of laryngitis - 1 hoarsepower
12. Shortest distance between two jokes - a straight line
13. 453.6 graham crackers = 1 pound cake
14. 1 million microphones = 1 megaphone
15. 1 million bicycles = 1 megacycle
16. 365 bicycles = 1 unicycle
17. 2000 mockingbirds = two kilomockingbirds
18. 10 cards = 1 decacard
19. 52 cards = 1 deckacard
20. 1 kilogram of falling figs = 1 Fig Newton
21. 1000 ccs of wet socks = 1 literhosen
22. 1 millionth of a fish = 1 microfiche
23. 1 trillion pins = 1 terrapin
25. 5 statute miles of intravenous surgical tubing at Harvard Mass General Hospital = 1 I.V. League

I always enjoy your posts !!! But that one is particularly clever.... TY

No units involved, but:

26. RValanche = The things that cascade from storage compartments in a motorhome after a few miles on the road.