Diacope (di-a’-co-pee): Repetition of a word with one or more between, usually to express deep feeling.
You think I’m crazy? You save your toenail clippings in Ziploc bags and hang them on a hook in your closet!
What about the time you smeared mustard on the bathroom wall as an air freshener?
You’re the one who’s crazy!
What do you think of that, nut case? Why don’t you put mustard on your toenails?
Definition courtesy of “Silva Rhetoricae” (rhetoric.byu.edu)