Hats. Serious business.
Dec. 27th, 2011 12:27 amhttp://cruftbox.com/cruft/docs/howtowashacap.html

Now if you are a women and are reading this, you may think, "Ha! I'll wash it while he's not wearing it and he'll never know!", but you are wrong. We may not notice you got a haircut or that the room got painted or that the kids are running with scissors, but we will notice if our cap gets washed. If you do it anyways, you may find some piece of your fancy silk clothes accidentally got washed the whites load with bleach and hot water. So keep your hands off your man's cap.
