[Yaoi Only] Any time either partner talks about one or the other being a toilet. For similar theme see 'Piss' album for when the talk becomes more of a reality haha
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.