Unbirth

Unbirthing is used to describe the paraphilia involving the desire to be "swallowed alive" by female genitalia, or when a female fur takes another into her womb and "gestates" that fur for a time as her own unborn child. A less-common but still significant minority also practice UB-Vore, wherein the female unbirther's body ultimately consumes the unbirthed. Another variant on this is males absorbing others (generally other males) as a form of male pregnancy. This is known as cock vore and often involves Hypertrophilia and/or Macrophilia.