"Son of a Gun (I Betcha Think This Song Is About You)" is a song by American singer-songwriter Janet Jackson with Carly Simon from Jackson's seventh studio album, All for You (2001). It was written and produced by Jackson, Jimmy Jam and Terry Lewis, with additional lyrics by Simon. The R&B and hip hop song is built around a sample of 1972's "You're So Vain" by Simon, who also added some new spoken parts into the song; it talks about an unidentified man who attempted to extort money from Jackson. A remix featuring Missy Elliott was released as the third and final single from the album on November 6, 2001, by Virgin Records.

All for You is the seventh studio album by American singer Janet Jackson. It was first released on April 16, 2001, by Virgin Records. The album's development and theme were rooted in Jackson's separation from husband René Elizondo Jr. as she attempted to move on. Contrary to The Velvet Rope, which saw Jackson tackling darker themes such as domestic violence and depression, All for You showcased a mix of upbeat dance-pop and slow R&B sounds, incorporating rock, disco, and funk, as well as soft rock and East Asian music. Its lyrics focus on passion, romance, and intercourse, while also discussing themes of betrayal and deceit. The explicit language and sexual content of several songs sparked controversy, causing the album to be banned in several countries.