"No More Mr. Nice Guy" is a song by the shock rock singer Alice Cooper, taken from the 1973 album Billion Dollar Babies. The single reached #25 on the US charts and #10 on the UK charts, and helped Billion Dollar Babies to reach #1 in both the UK and the US. Michael Bruce and Alice Cooper wrote the song.
Cooper wrote the song lyrics about the reactions of his mother's church group about Cooper's stage performances and the characters he played onstage. It was him saying that there was worse stuff that he could do in his life and that the "gloves were off now."