its hard to say, i can't imagine that sort of thing lasting long naturally. The procedure would have to be done over and over again because the women's body would change based on her predisposition genetically for small ass. On the other hand its hard to say what displaced ass cells will do,
as far as the penis goes, I'm quite satisfied with my own penis size and don't think of such things. Then again by logic the same thing might happen, but its once again hard to say what dick cells will do over time.
oh and back to the virus, i remember now, i tried to download Religulous, and thats when i got virtumonde