The Mc.Donalds Effect is when expectations don't meet reality.
It is called "The Mc.Donalds Effect" because the pictures of the food you see on Mc.Donalds never look the same when you recieve the food.
It can be seen in many instances, such as buying stuff off the internet. Or in general using the "Wish" app
Person 1: "Yo. Bro, I gotta show you these new kicks I bought of the internet, they are sick and we're only 25$.
Person 2: "They're SICK! When do they arrive?
Person 1: "Next Monday..."
The next Monday arrives
Person 2: "Why aren't you wearing your new shoes?"
Person 1: "They looked terrible when they arrived... Nothing like the picture in the ad"
Person 2: "That sucks man.... Guess thats the risk of buying stuff on the internet."
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)