When at last Gordon Brown decided to throw in the towel and resign, his cabinet colleagues decided it would be a worthy gesture to name a railway locomotive after him. So 'Sir Humphrey' went from Whitehall to the National Railway Museum at York, to investigate the possibilities.
"There are a number of locomotives at the NRM without names," a consultant told Sir Humphrey. but they are mostly freight locomotives."
"Oh dear, a freight locomotve is not very fitting for a prime minister," said Sir Humphrey. "How about that big green one, over there?" he said, pointing to the 'Flying Scotsman'.
"That one has already got a name" said the consultant. "It's called 'Flying Scotsman'."
"Oh well. Couldn't we rename it ?" asked Sir Humphrey.
"I suppose for the prime minister it might be considered," said the consultant.
"That's excellent", said Sir Humphrey, "So that's settled then...let's look at renaming the 'Flying Scotsman'. How much will it cost? Remember we can't spend too much, given the expenses scandal!"
"Well", said the consultant, "Why don't we just paint out the 'F'."