The term 'Penguin Suit' is a reference to the formal attire known as a tuxedo, which is also sometimes referred to as a tux. The word 'tuxedo' is derived from the French word 'tuxedo', which means 'formal suit'. The tuxedo is traditionally worn by men for formal occasions such as weddings and black-tie events. It is characterized by its black jacket and trousers, white shirt, and black bow tie. The term 'Penguin Suit' is often used to refer to the tuxedo due to its resemblance to the black and white feathers of a penguin.