This is the song, "Perform This Way" a parody of Gaga's "Born This Way": http://www.youtube.com/watch?v=fUxXKfQkswE
This is the whole story on Weird Al's blog: http://alyankovic.wordpress.com/the-gaga-saga/
The whole thing is bogus. Honestly I've never really been into Gaga but begrudgingly I've had to give her a bit of respect for doing what she believes in and supporting so many great causes. However, considering the fact that she demanded that Weird Al record the full song before she denied her approval (and for those who don't know, legally Weird Al does not need an artist's permission to release a parody but it's always been his personal credo to do so) and the fact that all proceeds of sale of the song and the video would go to the Human Rights Campaign, well, it's enough to make me rage!!!
At least Weird Al put it up on the internet.
Mod Edit: Update - Gaga has now approved the parody.