Hmm, I would have to expand the Rooney line to something like "Uh oh, he looks like Wayne Rooney - he's bound to be thick." But I will leave it out.
I don't mind sketches which aren't 1-2-3-punchline, it's the overall feel which does the business. I can sit through many TV comedies and not even smile, but this sketch would make me laugh. Well, we all have our own tastes.
Thanks for your comments, folks, it's always useful.