What about eccentricity quotient?
This is defined as the energy per unit time diverted into unusual pursuits.
1 nJ (Nerdjoule) = 1 Joule of mental energy per second.
N.b. The brain uses approx 500 calories a day, which is about 2092J. 2092/24 is 87 J/hour, 1.45 J/min, 0.024 J/sec. Thus eccentricity quotient will be measured commonly in mnJ (Millinerdjoules, 0.001 nJ), or even Micronerdjoules, 10^-6 nJ.
Yeah, I like making up bogus units of measurement too.