One of my girlfriend's husband started turning gray in high school too. One day she was out doing yard work in the back yard and made a comment to him about another squirrel getting killed because of the gray hair in the back yard. He gave her a really angry look and told her that it wasn't funny! And how she knew that was his hair from when she had cut it out on the deck a couple days previous! She said she could have died because she actually didn't realize it was his hair and not a squirrels!