<P> The term "B.O.", short for "body odor", is often thought to have been invented by Lifebuoy for an advertising campaign . It was actually coined by a company that made deodorant for women called Odo - Ro - No in 1919, but Lifebuoy made the term famous . The Lifebuoy radio ad, parodied by several Warner Brothers' Looney Tunes cartoons, used a foghorn followed by a "B.O." sound created using a Sonovox . </P> <P> It is the bar - soap used in the 1983 movie A Christmas Story by the main character Ralphie and his family . After his mother washes his mouth out with Lifebuoy for using an obscene word starting with F, Ralphie dreams that he is blinded and his father cries out, "I told you not to use Lifebuoy!" In the film, narrator Jean Shepherd noted his disgust toward the soap's taste, even compared to other soap products of the era . </P>

A christmas story wash mouth out with soap