Four Sheets To The Wind Meaning

(idiomatic) Extremely drunk

Example: 1975 Tom Waits, "Spare Parts 1 (A Nocturnal Emission)," Nighthawks at the Diner, Asylum Records
  You see, it's a well known fact, you know / I'm four sheets to the wind, I'm glad you're gone
2005 Richard LeVine, Awakening Waves: A True Adventure Story, Warm Wisdom Press, p133
  After a couple of hours many people were four sheets to the wind, having had a few too many drinks.
2009 Linda Hamalian, The Cramoisy Queen: A Life of Caresse Crosby, SIU Press, p9
  He would flee the apartment when the baby fussed and cried, only to return much later four sheets to the wind.