Foreign Accent

I was sitting at a bar in London once when I spotted two very large women sitting across from me. Bored as I was, I listened to their conversation and realized they speak with accents.
I said, “Cool accents, are you two ladies from Scotland?”
One of them yelled, “It’s Wales, you idiot.”
Slightly taken aback, I said, “Ok, are you two whales from Scotland?”
I don’t remember much after that.