SPOILER ALERT Guess Who makes a Cameo in X-Men: First Class?

To be honest, this is not a shock but I thought it would be Jean.

But it's.... Well it's, just see below (thx to Bleeding Cool)
Half way through X-Men: First Class, as Professor X and Magneto are travelling the world looking for mutants, they come across Wolverine, played by Hugh Jackman, in a bar. Before they can get a sentence out, Wolverine, without looking at them tells them to “Go fuck yourselves.” They leave.

The character’s appearance gets a laugh, his attitude and language gets a double laugh, repeating on itself, through the audience. It’s a superb scene, well played, well staged, well placed. And it’s the only moment such language is used in the entire film. We loved it.