Apparently, 2% of transpeople will be dissatisfied with the end result of their physical transition. Of that 2% very few have the changes reversed.

But it has been done.

And I'm pretty sure you don't have a transsexual friend, since you don't seem to be of the age where you can say vagina or penis. 12 year olds don't have surgical options yet.

edit- grow up and learn to call body parts what they really are... "yelling" at me only confirms your immaturity.

They can remove the breasts and put thee person on testosterone for the rest of their life but it is a poor substitute. It is one of the reasons that they go through so much trouble to make sure the person is OK to do the change.

There is almost no way to rebuild a penis once it has been removed

Why does she want to be a guy again? She shouldn't have done it in the first place. Talk about impulsive. Yes, I believe it is possible, but her guy genitals probably won't work.

hmm i think that'd be painful if they did.

Penis can grow back, if the area is not disturbed and washed with warm soap regularly

Oh yes. Back and forth, and back and forth, until the elastic wears out.

They probably could...

idk maybe if he gets another surgery done but if he changed in the first place why would he want to be changed back