To make mistakes on a gargantuan scale: used primarily as a noun, but can also be used as a verb. Has some basis in Cockney Rhyming Slang - "Mark DeLange = clanger"
"You just made a big DeLange", "I wouldn't want that delange on my record", "To delange is human, to forgive divine"
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)