People often say that they know things as well as they know the backs of their own hands, probably a bunch of you are guilty of this, too.
How much time have each of you or any of you actually spent getting to know the backs of your hands? How well do you all actually know your own bodies? Therefore, how can you adequately or truthfully state that you know anything as well as the backs of your own hands the way insinuated when said? And, wouldn’t it be worthy of note that some things you actually know BETTER than the backs of your own hands?
Do you know how many hairs, how many wrinkles, where each of the many wrinkles and hairs are? Moles, birth defects, slight discolorations, scars, etc.?
Think about it.