Bad is a concept in ethics used to describe undesirable circumstances or events. Bad may also refer to: Bad (album), a 1987 Michael Jackson album » *"Bad" (Michael Jackson song), a song from that album Bad (economics), a concept in economics which is used to describe an object or situation that's harmful to the persons affected by it, in contrast to a good "Bad" (U2 song), a song by the rock band U2 Andy Warhol's Bad, a 1977 film In Germany, the first part of the names of most spa towns, a c… (More on Bad)