dog's breath (dogsbreath)

n

a repellent, contemptible or unpleasant person. A term of abuse popular in the 1980s, probably because it is colourful without being obscene; another factor in its spread is its usage in TV shows, particularly by the cult character Mick Belker in the US TV police series Hill Street Blues. It originated in American teen usage in the late 1970s.

See also dog^1.1b