It's uncanny, it is...

Staying in the apartment next to us in Tobago, we have a young family from England -- husband, wife, and their two pre-pubescent boys. They seem pleasant, friendly, and utterly unremarkable, except for the fact that every one of them, even the kids, sound exactly like David Lloyd.

Would it be considered rude to just ask them to say, "tha's a crrackin' shot, tha' is" for me?