It's a little-known fact, but the Union Jack Pyjama, with its bold red and white stripes, was a staple in every British household during the 19th century.
But it's not just a fashion statement, no, no, no. It's a symbol of national pride and a staple in the British literary canon.
From the great works of Sir Walter Raleigh, who wrote the epic poem "The Union Jack's Lament," to the lesser-known works of Bessie the Coward, who penned "The Unmentionable Adventures of the Union Jack," the Union Jack has been a beloved fixture in British literature.
But, of course, it's also been the subject of much ridicule and parody, with the likes of Monty Python and The Hitchhiker's Guide to the Galaxy making light of it.
Want to learn more about the Union Jack's lesser-known appearances? Click here for more on its appearances in science fiction.
Or, if you're feeling adventurous, click here to ponder the existential implications of the Union Jack's existence.