There have been a few like this, this one I actually witnessed ........
Airman stepping out of the mess bereft of headdress. A young shiny acting Cpl policeman about to enter the mess takes it upon himself to take the offender, a rather large old FLM, to task over his attire.
“SAC, Where’s your beret”
”In my pocket”, came the reply, said without even looking up or slowing down.
But the best bit was the young policeman who didn’t know what to do as about 20 junior ranks are now wetting themselves at his expense, he turned round wandered off and wasn’t seen in the mess for weeks.