Woman gives birth to someone else’s children

Okay this is weird. There are twins walking around the world who share the same body. Apparently, they’re called “chimeras” – up until this time, I thought it was just an old name for a [web browser.](http://camino.mozilla.org/)  So there’s this woman that we like to call “Jane”. [Apparently,](http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2003/11/13/nivf113.xml&sSheet=/news/2003/11/13/ixhome.html)  cells from both twins “intermingle” in her body. Cells from twin number one dominate her internal organs, but for whatever reason, egg cells from twin number two decided to make a kid for her. 

Although the woman, “Jane”, conceived them naturally with her husband, tests to see if she could donate a kidney suggested that somehow she had given birth to somebody else’s children.

With a bit of imagination and some paranoid thoughts, this would make a fantastic b-grade horror movie.