"Lemon Incest" is a song written, composed and performed by Serge Gainsbourg in duet with his daughter Charlotte Gainsbourg. Recorded in 1984, the song was released as a single from Gainsbourg's album Love on the Beat in 1985. It is also available on Charlotte's 1986 album Charlotte for Ever. It was controversial because of its theme, but nevertheless successful, reaching number 2 in the French charts.