Number 3: If you work with your mouth open, your co-workers will create "clever" nicknames for you... such as The Fly Catcher (it's ok... you can laugh... I've accepted it).
Number 2: If you work with your mouth open, your husband will try to take pictures of your open mouth while you're cooking dinner (luckily, the pictures are mostly blurry!)
And Number 1: Drywall mud is gritty!
