When is a diss not a diss? When it's a) not offensive, or b) leaked beforehand so everybody knows it's going to happen so there's not going to be any surprise element whilst at the same time bigging it up as a huge deal, which will ultimately make it more of a wet flop than a diss.

Diss is a stupid word anyway. I think I remember saying it at school as a joke. Why is it a serious word? Anyway. Anyway anyway anyway. But you read the title: Katy Perry is going to "diss" Taylor Swift at the Superbowl halftime show.

"Katy will be doing something on stage during her performance that will be directed towards Taylor. She is working on it to be a visual or a lyric related jab."

That is what "an insider" said. Just to plan it so far in advance is super-lame. Takes all the fun out of any potential diss. It's like a business diss, just for publicity not necessarily cause you wanna actually be horrible to someone. If she wanted to do that she could just say some nasty stuff on Twitter. But instead we're all gonna be waiting for some big-time diss and I bet it's gonna be a let-down.

What is the source of all this dissness? Two things: Katy Perry allegedly 'stealing' Taylor Swift's backup dancers, and Taylor Swift writing a song following her breakup with John Mayer that Perry, going out with Mayer at the time, took offence to. Uggghhhhhh, seriously? Get over it.