When you subtract the age (or apparent age) of a child from that of their parent, this results. Typically done to justify a Hot Mom, but sometimes, she really was that young when she gave birth (or the other gender around). Sometimes she only appears this way because of the art style. In Real Life, a girl can conceive as soon as she has her first menstrual cycle, generally around 11 or 12 years old... although in rare cases this can occur at an even younger age, such as five years old. Examples of Absurdly Youthful Mother include: