An orgasmic explosion of freedom to express all the racism, sexism, antisemitism, and phobias (islamophobia, homophobia, xenophobia, etc.) which have been suppressed for years through a combination of an apparently misguided sense of common courtesy, good taste, and normal (or sane) behavior.
When playing the drinking game, King's Cup' (or 'Ring of Fire'), if a certain card is drawn by a person that person becomes the thumbmaster, and whenever they place a thumb on the table or floor everyone else in the circle must follow, and the last person to follow must drink.
Fred is thumbmaster. Fred places his thumb on the table. Everyone except Georgie notices and follows. Georgie is last, so she must drink.