A person that's not with the shits
That guy is a square and a sucka
He's too "square" to come party , and hang out with all of us weirdo, freaks.
Today kids we are learbing about squares, example, WillNE's head.
A person or your friends head. It coudl very well be used as a right angle
Classmate: dont dance your blocks off
Someone presumably named Kim or Anne: I promise i wont, I'll make sure to use my blockhead that I'd ever so square to think things through.