A person who ignores everyone if they're with their spouse/girlfriend/boyfriend, and makes passes at everyone and everything at the same place (with the same people) when they're alone.
People who are too pussy like to set ground rules for their spoiled kids and expect us to play along. When we say "no" out of habit the kid screams bloody murder, these so-called parents give us dirty looks.
Those are the kind of assholes that really make shit happen.