Given that the paint is only just dry on the very first ever sign that said "Royal Air Force" and the colours of some of our most famous regiments are several hundred years old, hanging in cathedrals throughout the land, you should appreciate that when the RAF try, "Taking the piss out of pongoes" it is exactly like a very precocious, bad tempered brat answering back to it's parents!
And, I can't think of an original one
However, fact: I had to divert going into Calgary and had two options, guess Edmonton was one, can't remember the other. It made no difference to me. I called the Capt in charge of the detachment on board forward and asked him which he preferred operationally. He had to send for his Sgt Major