A thickometer would be an imaginary scale used to gauge the thickness of a big
booty honey. Thickness in the thighs, hips, and ass and such. Different scales apply to each woman, so use proportionately. If she's nice and thick (like say, Trina) she gets a high score on the thickometer. Others who don't quite have as much in the trunk obviously
will score a little lower.
Fat girls need not apply!