Lawrence Eugene Williams was an American rhythm and blues and rock and roll singer, songwriter, and pianist from New Orleans. He is best known for writing and recording some rock and roll classics from 1957 to 1959 for Specialty Records, including "Bony Moronie", "Short Fat Fannie", "Slow Down", "Dizzy, Miss Lizzy" (1958), "Bad Boy" and "She Said Yeah" (1959). John Lennon was a fan, and the Beatles and several other British Invasion groups recorded several of his songs.

"Bad Boy" is a song written and recorded by American R&B musician Larry Williams. Specialty Records released it as a single in 1958, but it failed to reach the U.S. Billboard charts. However, music journalist Stephen Thomas Erlewine calls it one of Williams's "genuine rock & roll classics" and notes its popularity among 1960s British Invasion groups, such as the Beatles.