Reid originally wrote sexually explicit versions of hit songs for fun but only performed them for his friends at parties or in the studio. In 1971, he along with a band of studio musicians recorded a whole album of dirty songs under the name Blowfly. The album, The Weird World of Blowfly, features Reid dressed as a low-rent supervillain on its cover. He created this alter ego to protect his career as a "straight" songwriter.
His work was sampled by dozens of hip hop artists (such as Beyonce, Wu Tang Clan, DJ Quik, DMX, Method Man & Redman, Main Source, DJ Shadow, Eazy-E, RJD2, Jurassic 5, Big Daddy Kane, Mary J. Blige, Brand Nubian, and the Avalanches) but Reid has received almost no money from sampling due to signing away most of his royalties.