Small and silly, I know, but a recent slashdot poll amused me.
- What percentage of the circumference of Terra are you right now from where you were born?
I hereby dub that unit the Prefect, in reference to Douglas Adams' idea that in extreme moments of stress, the distance beings are from their homeland potentially gives those nearby a feeling of how distant/vulnerable they are feeling (Ford Prefect likely being the first alien to ever give someone an impression that was very noticable). A prefect will be 1 earth-circumference, a centiPrefect will be 1% of that, or roughly 249 miles.
I am 5.2 centiPrefects from my birthplace.
(This is considerably more concrete and convertable than the standard measure of 80s-ness of something, the milliLauper; as noted, the Lauper itself is too large a unit to practically measure with)