I found something

[Jaran]

Originally Posted by 50percentgrey

All it is a slideshow of MMD girls of different sizes making out and having a shrunken boy between them. And the smaller girl only grows to the same size as the first "bigger" girl, so it's more like reverting to normal size.

I know a better CG video that shows what we call "process": http://www.furaffinity.net/view/24910046/

You didn't watch it all the way through then. 7:50 Teto grows to near room-filling proportions