Sorry, still have some Supernatural to get out of my system.
Inspired by two things.
One, the fandom is having a ball with the fact that Sam is a tiger in bed, while Dean seem quite submissive.
Two, Crowley hinted that he and Naomi were lovers in Mesopotamian times but Naomi ended it, which has lead fans to speculate that their story might be inspired by Inanna, Queen of Heaven, and her human lover/husband Dumuzi who was dragged to the underworld by demons. Inanna wasn't exactly known for being gentle with her lovers, and Naomi is hardly a gentle flower.