It's Postman Pat's last day posting letters in Greendale.
At the fisrt house he is given a bottle of malt whiskey as a leaving present, at the second a golf bag for his intended hobby in retirement.
At the third a buxom blonde answers the door in a negligee, she takes him by the hand leads him upstairs where he receives the best sex he's ever had, in fact thinking about it, probably the only sex he has ever had. She then takes him by the hand downstairs to the kitchen whereupon she cooks him the full monty of an english breakfast. Whilst he's tucking in he notices a £5 note poking out from under the plate.
"Why is there a £5 note under my plate"? asks Pat.
"well pat, replies the blonde, "the breakfast was my idea and last night when I mentioned it was your last day delivering the post in Greendale to my old man he said, "**** him, give him a fiver"