I'm not Nona, but
"A ghost of a chance", (almost no chance at all, as if one's chance has died and left only a ghost). "Now that he has been arrested for drunk driving, he hasn't a ghost of a chance of being re-elected"
"A devil/**** of a time" (A difficult or inconvenient time). You get a phone call at 3 am "This is a devil of a time for a salescall!!"