Are people really having a debate about whether taylor said "shut the fuck up" or "sorry for my arm" or whatever? even if she did say "shut the fuck up", then what's the big deal? selena is her friend and taylor surely said it in a playful way. i'm sure everyone of you has said something like that to your friends at some point. let it go, relax! she's a young woman talking to her friend and she can say whatever she wants without you building a case!
Because ppl love issues, thats why they make big fuzz about it!