Just ask to use their shitter and see what their toilet paper looks like.

If they have toddler’s or little tots, it will look like this:

If they have teenagers (or a lazy Mommy who has 3 kids 3 and under) it will look like this:

(The best part is that the roll that is resting on top is almost gone).  Oops.

My mother has this amazing sign in her bathroom:

I think I may need to order one, hang it up and heed my own advice.  (I am not sure I used that word “heed” correctly but it sounds good….and smart).