- A person who has over-imbibed.
18th century. Likely a corruption of “free sheets,” implying being careless. Sheets are another term for sails.
Simply put, someone who is inebriated. Drunk as a skunk. Sloshed to the gills. A fairly common expression nowadays, and one that has a nautical origin.
Rogers, J.G. (1985). Origins of Sea Terms. Mystic Seaport Museum.