Bum Fuck NoWhere, this is a spot which resembles the arse end of nowhere. Most likely to be inhabited by rednecks, inbreds and yokels. Miles from help and a hot meal/cold beer, it usually sucks to be there.
BFNW is the family friendly version to be used when parents or grandparents are in ear shot.
"Tell mum not to slow down this place looks like we're in BFNW..."