I wasn’t thinking “fowl territory” but that’s nice too.
In baseball, outside the lines is called “foul territory”. I never really thought of it as foul territory. As in, “don’t go near that scumbag, he’s from foul territory.”
Although, now that I think about it, there’s a boxer named Andrew Golota from Poland. He’s has a bad attitude, having been DQed from many fights for low blows. Almost everyone calls him “The Foul Pole”.