An insulting phrase used by inhabitants of the city of Bristol in south west England to refer to the neighbouring city of Bath. It derives from the scandal when MPRon Davies was caught near Bath "looking for badgers" soon after being embroiled in a scandal where he had been robbed in a London park notorious for cottaging.
A Smutbadger is a person who lurks around public places for anything that could possibly be dirty, including skimpy outfits, attractivepeople, or even dirty phrases.