What’s on her head?
Every day while walking by this sign, this person finally noticed that something was very wrong. At first, it was always clear that the woman in the picture was wearing a towel on her head. But now, after staring at it for a while, is she wearing a towel, or is that just a terrible haircut?
We can not say for certain that it’s a towel and not her hair, because any way you look at it, both possibilities could be true. If that is her haircut, we would suggest that this person never steps foot into the hair salon. They clearly have no idea what they are doing with a pair of scissors.