That's the gap between the first time and the last time my bloke ate in Mac Donald's.
Here for your delectation is an interview with him on the subject:
Dr Lockett eating a small cake in Lourdes.
Me: "So, Dr Lockett. When did you first sample a Mac D's product?"
Dr L: "It was in LA in 1979 during a full-on filming session for - err, I forget the film title, one of those USA youth nostalgia things - American pudding or something. Anyway, I was in a band who were performing in a prom dance scene. Lunchtime arrived and we were bused to the place of the yellow arches - in McCarthy Vista (odd road name, eh?)
As a vacillating vegan/vegetarian/macrobiotic type, I remember feeling as if I was entering a giant plastic version of a Hieronymus Bosch painting full of hellish meat smells. Anyway, I decided to go the 'whole hog' as it were and ordered a Big Mac."
Dr L: Putrid. And vast. I also had strips of greasy cardboard called 'fries' and a vanilla milk shake the size of Florida."
Me: "So you felt quite full up then?"
Dr L: "Understatement."
Me: "So, fast forward to 2017, and your second Mc D tasting event. Why, in fact, did you go in one of these establishments."
Dr L: "Despite hanging around in a queue outside the 'Capitol' opera house, no-one had a ticket to sell, or rather there was some woman but she refused my reasonable offer and flounced off home to watch Netflix and probably bin the ticket rather than give way . . . where was I? Oh, yes. So I had to buy an actual box-office ticket and felt guilty about spending money on food too "- (sob).
Me: "And Mc Do was on the square, quick and cheap."
Dr Lockett: "Yes . . .yes. I admit, I entered the place."
Me: Did you see any leering clowns?"
Dr L: "No. But also few actual people. They seem to have installed sort of petrol-pump machines where you poke the screen to order what you want - or at least have resigned yourself to eating ."
Me: "Fish Mcmuffin? Locust-burger? a bag of salad?"
Dr L: "Don't hate me but . . . I did it - purely as an experiment and/or conceptual art piece. 39 years had passed so I ordered exactly the same things."
Me: Big Mac, fries and a vanilla milk shake."
Dr L: Nods. "Except they don't do milk shakes now. So I had a beer. That was okay."
Me: And the 'food'.
Dr L: "Putrid but not so vast - possibly the difference between the French and American market. I'd imagine now in LA you'd have to bring a trailer to 'take out' a Big Mac and fries."
Me: "What was the taste like:"
Dr L: "Fries - greasy cardboard - at least some things in life stay the same, eh? The meat. Oof. Right, let me think about this . . . tasteless, anaemic, steamed beige flannel, with a hint of kerosene."
Me: "Sound like the dog treats we give the hounds if they don't bugger off when we're on a walk."
Dr L: "No. Those are quite tasty."
Me: "So, will you be going into the place of the yellow arches again in 39 years time."
Dr L: "It's a date. I'll be a hundred. If I make it we'll both go and have a dystopia burger, fried grass and something distilled out of wasps."
Me: "OK. You're on. Thank you Dr Lockett for your time."
Jim Delligatti, inventor of the Big Mac. He died at the age of 98 so he must have steered well away, and consumed a lot of broccoli.