"Surprising" in no real sense of the word

There was a big surprise at the Kaiser Chiefs Leeds United gig.

Really? A big surprise? Not just the too-be-expected clattering through of Mark Ronson, then?

Um... well, actually...

Because that's not really much of a surprise, is it? It's like Tony Blair being booked and Cherie coming along with him, isn't it?

Yes. Yes, that wouldn't be surprising at all.

So, what would your surprise then?

Erm...