Mark: My family never called it a mirepoix, we always called it the trinity.
Me: Actually I think the trinity is different than a mirepoix. The trinity has green peppers instead of carrots.
Mark: No I think they are the same. Onions, celery, carrots.
Mike: Yeah I think the one with green peppers has a different name and that mirepoix and trinity are the same.
Me: Well if it does I can't think of the other name...
Mike: So Mark if this was The Trinity who would they be?
Mark: Well I think that the Holy Ghost would be onions cause they get all see-through when you cook them.
Mike: OK well what about the other two?
Mark: I guess Jesus would be carrots, cause God is definitely celery.
(Incidentally in case you're wondering I was right - a mirepoix = onions, celery, carrots and the trinity = onions, celery, green peppers.)