After sex, two lovers share a post-coital smoke. Frequently, as in the picture, they'll do so sitting up in bed wearing a Modesty Bedsheet. Mostly a Dead Horse Trope at this point, though it often pops up in parody. Often used as a metaphor to say sex has taken place without showing it. One occasionally seen variation is the post-sex pizza (maybe it's easier to get past the Moral Guardians?) Examples of Smoking Hot Sex include: