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one too many

n. 1 (&lit one too many English) 2 (context idiomatic English) One or more serving too much of alcohol, which leads to drunkenness.

Wikipedia
One Too Many

One Too Many, also known as Killer With a Label, Mixed-Up Women, and The Important Story of Alcoholism, is an exploitation film produced by Kroger Babb in 1950. It tells the story of Helen Mason ( Ruth Warrick), who is slowly revealed during the course of the film to be an alcoholic, destroying her career as a concert pianist and her family in the process.

The film contained musical numbers as filler, and was presented as an exploitation film by Babb. The subject matter, however, was not easily exploitable and the film failed to do well. Regardless, the film was redistributed many times over the years, and most recently released on DVD by Retroflicks.

One Too Many (1916 film)

One Too Many is a 1916 American silent film starring Oliver Hardy.