Via a writeup on Fox News, i found this little thing.
Just this week I had a number of 12th grade students (who had all attended the same elementary school) insist that a 40x30 rectangle was, in fact, a square. In fact, the only thing they wanted to call a rectangle was a right-angled quadrilateral with dramatically different heights and widths, like a door or a chalkboard. If the height was close to the width (like a 4:3 TV screen ratio, or even an 8.5x11 sheet of paper) they insisted it was a square.
But here's the kicker: when I tried to actually teach the correct definition of a square, students refused to listen, because they acted like it was just my opinion.
That is actually a life lesson. Though, Ps and Js will get different things out of it.