In his third Demon story and second numbered issue (his first was Demon #40, his second story was Demon Annual #2, and #41 was a fill-in), Garth Ennis introduces a romantic pair of love seat cushions. I am fairly certain nobody had done this before. Or since. And this isn’t even as weird as Ennis’ run would get.
This was also part one of the “Hell’s Hitman” arc, which followed after Demon Annual #2.