When your mother has to use the exact correct change whilst paying for goods which she thinks seems to make life easier, but actually makes everyone's life more difficult.
check out girl: " that will be £9.76 please"
Mother: "OK, hang on, I have the correct change" *five mins later* pays
Daughter/son : " you're such a mumochange "
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)