Family math

L = S/B

You can determine L, the number of lights that will be left on in broad daylight in the average house, by dividing S, the average number of ads for scary movies that appear during one hour of Nickelodeon programming, by B, the number of boys aged twelve and under in the household.

We are seeing L-values of 5 +/- 2 these days. I'll be glad when all the Halloween movies have debuted.