The "John" is a social position within a group often equivalent to the bottom rung of a ladder or the ugliest child in a orphanage.
Requirements needed to fulfil this position include minimal amounts of self-respect, little to no social prowess and mild elements of physical or mental deformity (without crossing into medially recognised deformities).
The "John" is often taunted and fun is made at his expense to please higher-ranked members of social circle.
Despite his low-ranked position a "John" is integral to a group as a means of funnelling hatred and male bonding.
As Socrates famously once said "Without a John society would cease to exist." This comment was followed by a series of childish insults directed at fellow philosopher Johnates.
I hate you. You're such a John.