An Octagon Head is when a person head refers to the shape of an octagon. When a person is refereed to as an "Octagon Head" they may use certain vocabulary as "Swows." , "Shish." and "Yoy."
"Hey have you seen any Octagon Heads around here?"
"Nah, I can only see some fufing swows around these parts"
Somebody who’s head is full of poop. The these people tend to have really big heads because the poop in their head clogs up their veins so their head swells because it’s not getting enough oxygen. Ex: Airwick