The sexual act of pouring gasoline, or any flammable substance, down the woman's vagina or anus. Then, vigorously penetratingthat person, so that the friction sparks a flame.
Two famous printed-media figures whose "hot 'n' spicy" reading-material can really "light yer fire".
I may indeed disapprove of "Flynt and Steele" style of literature, but it's all protected speech under da First Amendment, so I wouldn't actually "take a flint and steel" to said smutty publications.