When a teenage Teeters was flying JPs, he had the misfortune to have his bachelor Sqn Cdr living in.
One Saturday breakfast in the Mess, Teeters was in full country gent mode (he foolishly thought), ready to go and hit town.
Tattersall check shirt, tweed jacket, cav twills and a rather fetching (he foolishly thought) emerald green cravat.....
Approached by said Sqn Cdr........
"Teeteringhead, whatever than green thing around your neck is, it doesn't constitute a tie within the meaning of Mess Rules. Get Out!"
Yes, little ones, a jacket AND TIE was required for Saturday Breakfast within living memory...........