Was it time for a haircut?
Did he have to look in the mirror?
Was he going bald?
Did he need to cut his hair every week?
Was a "tongue" of hair on the back of his head?
Was his hair thinning at the crown?
Did he still have plenty of hair on the sides and back?
Did he ever let his hair grow for more than two weeks?
Did his hair look worse the longer it got?
Did he spread a magazine over the bathroom sink?