For the last week, K has been whining that his hair needs cut. Normally it's me whining at him to get it cut. It really wasn't bothering me.
Tonight, when I got home, I offered to take him to get it cut. He barely hesitated before going to get his shoes on. When I asked him a few minutes later how much he planned to get cut off, he said about an inch, which was exactly what I would have gone for.
So, I am grateful that I am now able to not be bothered by the length of his hair AND that he and I agree as to what length is manageable. Only another 6742 issues left to resolve! :D