Remember Come As You Are parties where people were invited to come in whatever clothing they happened to be wearing at the time of the event?  A cultural novelty of bygone times, people were welcome to arrive in anything from business suits to birthday suits.  Although the events were often used as opportunities to dress in the wackiest clothes imaginable, the parties were an invitation for people to get together without having to worry about appearances, often stretching the bounds of social convention and proscribed self-conceptions.  The underlying concept was that people could come together with fewer pretenses, free to express themselves without the judgment present in everyday experience.