 Anything with explicit content, especially with erotic scenes without accompanying romantic scenes, may be labeled "lemon".The term "lemon" arose from the anime/yaoi fandoms, referring to a hentai anime series, "Cream Lemon".The term "squick" is most often used as a warning to refer to a reader's possible negative reaction to scenes in the text (often sexual) that some might find offensive or distressing, such as those including incest, BDSM, rape, "MPreg" (male pregnancy), gender swapping, and torture.