The one bad pint many people accidentally drink along with the 15 good ones also consumed that causes the person to be sick as a plane to lourdes the next day.
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.