Mamma Mia
Whiteley also suggested that “Bohemian Rhapsody” gives us a look into Mercury’s emotional state during the time. The lyrics ‘Mamma’ could mean Mother Mary and the lyrics “Mamma Mia let me go” could refer to his wishing to break away.
Source: vice.com
Some people thought that the song was about Mercury’s ‘coming out.’ Considering his death to the disease AIDS, rumors began about his homosexuality. People assumed it was his way of confessing that he was gay. After Mercury’s death, on November 24, 1991, Lesley-Ann Jones who wrote the biography Mercury spoke with Jim Hutton who told her that the song indeed was Mercury’s confession that he was gay, according to him.