Is Lady GaGa really making a Mocking jesus ?

I'm 14 and a christian , i go to church and sunday every sunday . Even Attend most bible studies on wednesday . I don't understand why this song is being called a mockery ? It's makes no sense . I know about the story of Judas who betrayed jesus for 30 pieces of silver . But i can't figure out a tie between the two can anyone tell me ?