back-sleeper Share definition Flag A back-sleeper is a guy who sleeps on his back in a gay bathhouse room so dudes who enter know he wants to be sucked off. Matt is a back-sleeper and I'm a tummy sleeper! back-sleeper by USAF Cadet September 2, 2021 0 0 Get merch Get the back-sleeper mug. Buy Now — $32.95 See more merch