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Partial unbirthing is the act of inserting one's head into the vagina and through the pelvis. It is a fetish that is extremely rare, probably one of the rarest of all sexual activities. The reason for this is that to be mutually enjoyable it requires that vagina stretches to an enormous size. The woman must also have a huge justo major pelvis. This condition is where the minimum pelvis size is enlarged uniformly in every direction by a linear factor of 1.5, or more than the average 11-inch wide pelvis. This 16.5-inch ‘or more’ Justo Major pelvic width is a condition that is only present in less than one in a thousand adult women. If these conditions are met partial unbirthing is possible. These are fantasy images of this fetish. I should be able to add to this gallery faster. But they're still hard to find. If you know of fantasy partial unbirthing images I'd appreciate it if you could share them.