Bob We should go metric.
Doug Why?!
Bob Then we could drink a beer every kilometre, not every mile.
Doug So?
Bob So... kilometres are shorter than miles!
Doug AH! So we drink more beers.
Bob Exactly. What's the conversion factor to go from miles to kilos?
Doug Uh. Double it, and add thirty.
Bob No, get out! That's temperature.
Doug So, it's still metric.