How about ABC - that is used when I make minute steaks or cube steaks - ABC - already been chewed! Or NCM - non compos mentis - Latin for Not Totally With it!!!! You know, a sandwich shy at a picnic, one fry short of a Kid's Meal, etc.
Have a good day. At least I think us older ones have better initials to our shortening of words. At least you have to think a little bit in the process - Oh, Gum is also ABC! Edie