MUH-FUH is used as term for saying mother fucker. It was originally used so that teachers or coaches couldn't understand the fact that you were saying mother fucker.
A complicated idiom used by small, loser-ish people to describe something with great enthusiasm, can be used both positively or negatively. Used in place of words such as motherfucking, or m'f (em effing)
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. Penguin Books,1992. p. 38)