sex machine

plural sex machines

1. idiomaticSomeone with considerable sexual prowess.

   I said do the bump, huh, I said shake your rump / And stay on the scene like a sex machine

   1970, “Get Up (I Feel Like Being a) Sex Machine”, performed by James Brown

2. Any machine that is used for sexual pleasure.

   The typical scenario, Archibald says, is a married guy “who likes building things.” He comes across someone else's sex machine, is fascinated, decides to build one himself.

   2009, Mary Roach, Bonk: The Curious Coupling of Science and Sex, W. W. Norton & Company, →ISBN, page 55