A slang term for a very Welshy sounding person from the South Wales Valleys. Although some may find 'Bauper Bint' offensive it's actually an appreciative word of those with a real Welsh accent and a tendency to say Welsh slang terms such as 'mun', 'now in a minute' 'innit' and 'who's coat is that jacket'.
Dai: "Who's coat is that jacket then butt? I'm going to town now in a minute."
Evan: "That's Caridwyn's from the youth centre. Give us a lift then you BAUPER BINT!"