I think a better case could be made for his gross tats and piercings 'causing offence'; but I'm not English. Indeed, I wonder how rarified is the social environment there so that that sort of thing causes offense? Are there other traps an unsuspected tourist or local might fall into? It's not like teaching him to pee on the sofa.
Anyway, it was a pretty lame way to annoy his girlfriend.Here's Donald Duck, also seig heiling all over the place:
Are some people possibly getting a wee bit too thin-skinned nowadays; or is this just another opportunity for some people to wax indignant!
Over there in Merrie England, would I cause offence for spelling it offense?