the incapacity of the human to see all the places to shave/etc, when grooming. ie: being haunted by; "you missed a spot"!!
looking right at yourself in a mirror, it is groomer's law that you will 'miss a spot'!! -the one hair that can turn itself invisible or (clear-colored!) while you are looking exactly at its' "gps" point!! ('groomer's blindness'??)
jill was busting on my door as i was troubled by groomer's law
he said 'you missed a spot'! i said, -groomer's law!
only a barber/stylist comes close to beating 'groomer's law
she was so anally fastidious, she could best the groomer's law