Nonsense; foolish talk

They say that NYC water is a skin healer. Baloney! It's just an urban legend zipping around the Internet

Dicono che l'acqua di NYC sia un toccasana per la pelle. Balle! È solo una leggenda metropolitana in giro su Internet

You say I never take you out. Baloney! Last Friday we went to a movie and then to a restaurant

Dici che non ti porto mai fuori. Balle! Venerdì scorso siamo andati al cinema e poi al ristorante

1894, variant of Bologna sausage (q.v.). As slang for "nonsense," 1922, American English (popularized 1930s by N.Y. Gov. Alfred E. Smith; in this sense sometimes said to have been one of the coinages of legendary "Variety" staffer Jack Conway), from earlier sense of "idiot" (by 1915), perhaps influenced by blarney, but usually regarded as being from the sausage, as a type traditionally made from odds and ends. (Source english.stackexchange.com)