How's hair is a cover up for when something next to you is really bad or awkward. You cant say it out loud to our friend so you just ask them"How's my hair?" and they get
the message. Hows my hair can be abbreviated to Hows the hair, hows hair, and even the occasional "hh". You can answer
the question if you
understand what theyre saying but yelling "Needs a little mousse"