One of the, well, the major reason people crash into glass doors, windows or walls, is because the glass is too clean. Glass that is too clean? No such thing, unless you're one of these people who were too clumsy to realize that it's actually glass they're bashing themselves into. Try not to pee your pants, these gifs are very entertaining!
There should be a sign or sticker on glass doors and windows. It’s hilariously dangerous!