"Useful English System conversions / units" joke

Ratio of an igloo's circumference to its diameter = Eskimo Pi
2.4 statute miles of intravenous surgical tubing at Yale University Hospital = 1 I.V. League
2000 pounds of Chinese soup = Won Ton
1 millionth cup of mouthwash = 1 microscope
Speed of a tortoise breaking the sound barrier = Mach Turtle
Time it takes to sail 220 yards at 1 nautical mile per hour = knot-furlong
365.25 days of drinking low-calorie beer because it's less filling = 1 light year
16.5 feet in the Twilight Zone = 1 Rod Serling
1/2 large intestine = 1 semicolon
1000 aches = 1 megahertz
Weight an evangelist carries with God = 1 billigram
Basic unit of laryngitis = 1 hoarsepower
Shortest distance between two jokes = a straight line
Time between slipping on a peel and smacking the pavement = 1 bananosecond
453.6 graham crackers = 1 pound cake
Given the old adage "a journey of a thousand miles begins with a single step," the first step of a one-mile journey = 1 Milwaukee