(as) messed up as Hogan's goat

dated In a great state of confusion, chaos, or disorganization. The origin of the phrase "Hogan's goat" is uncertain. We need someone to get this office in order because it's currently as screwed up as Hogan's goat. Leave it to Miller to take over and have everything messed up as Hogan's goat in a matter of days. I dropped all of my printouts, and they're all messed up as Hogan's goat. Any chance you can help me sort them out?