This is a very, very common thing amongst Irish people when describing a person, place or thing. Because sometimes we can't articulate how large or small an object is, or the skin tone of an individual or even the heat of a local curry dish - we use this a lot! We basically just say the word twice and the person who gets the info knows exactly what we mean by tone alone.
To express delight that something went awfully wrong for someone (they might have had it coming to them or deserved it in someway, or you might dislike them). For example if an insult they used backfired.
