A shirt with 2 pockets where each pocket has 2 buttons. Wearing these unnecessary additional ornamental buttons is a clear indication that the individual is attempting to overcompensate... for something. Generally used when the source of overcompensate is unknown. May also be used anytime a person says or does something you don't like, but you can't think ofor a good way to punish them.
"Sounds like something a four-button-shirt guy would say."
"I like those big tires on your truck... they go well with your four-button-shirt."
"Oh, she rejected you? Time to pull out the four-button-shirt."