Irish pennant
n.— «The term “Irish pennant” derives from the Royal Navy during the time of sailing ships. It was a loose or untidy end of a line. In Navy and Marine Corps parlance today, an Irish pennant is a loose thread on a uniform, for which you get gigged at inspection.» —“Irish Pennants” by Jack Kelly Irish Pennants May 5, 2005. (source: Double-Tongued Dictionary)
Further reading
Is there such a thing as a “neutral” accent, and if so what does it sound like? And that quirk in the way southern Californians talk about freeways. They’ll say things like take the 405 and get on the 8. Why the definite article...
Floordrobe is the new word for an old habit: piling your clothes on the floor instead of putting them away. The Oxford English Dictionary recently added an entry for it, defining floordrobe as “an untidy heap of discarded clothing left on the floor...