"Who the Fuck Is That?" or the edited version known as "Who the Heck Is That?" or the BET version known as "Who the Heck..." is the first single off slain rapper Dolla's unreleased debut album A Dolla and a Dream, as well as his mixtape Another Day Another Dolla. The song features T-Pain and Tay Dizm. The official remix of the song features labelmates T-Pain, Akon and Klepto. It is produced by DJ Montay and Akon.
The edited version of the original makes a sound of glass breaking to censor out the word "fuck". The edited version of the remix makes a blur-like sound when "fuck" is said, making it sound like "funk". At the end of Dolla's second verse, he says "Album comin' soon, bitch, get ready for the summa", referring to the late release of the single as to when the song was officially leaked around July 2007.
The song was originally for rapper Klepto featuring Bravo with T-Pain on the chorus, because of label disputes and distribution agreements the rights for the song were passed to rapper Loon, Later, Loon's verses was replaced by verses by Dolla and finally Tay Dizm's verse was added on the final version. Later releasing a version featuring Klepto and Bravo The Vulgar Basterd as a Freestyle Remix.