Good idea about the photo! After a ridiculous argument one day where he swore black and blue that the office wasn't messy even though the floor was a death trap of empty beer bottles, opened book stacked on open book and general clutter, I said, "OK, d'you know what, I'm going to photograph it and send it to Judge Tracy (one of our friends) and see whether she thinks it's messy." Got cleaned up the same day.