I found this description of the Welsh people (which is my main bloodline). However, this particular characteristic is not particularly mine.
"The Welsh enjoy talking. They talk incessantly. They talk passionately. They talk about anything. Two aspects of Welsh conversation can confuse outsiders. The first is their habit of mocking what they hold most dear. The second is the way they argue most violently with those closest to them, because they know what they can get away with. A casual listener, hearing the raised voices and the name calling of the most personal and insulting variety, might have difficulty in telling a normal discussion between two close friends from the start of a blood feud."