Who's arguing?

I know what wow is talking about with the Socttish accents. Some of them are impossible to decipher. In a pub in northern Scotland, an older man accosted me and kept asking me something that I couldn't understand. I felt embarassed to have to keep saying "What?", and it didn't help matters that the fellow looked rather...irate. Finally his words became clear to me. He was asking "Are ye a German, lad?" To which I replied, "No sir I'm an American." Instantly his face blossomed into a smile and he clapped me on the back and said "Ah, you're a Yank are ye!" I got the impression that a "German lad" wouldn't have been very welcome in that particular pub.

It wasn't the only time I was mistaken for a German. In a train station I was accosted by a pan handler, and I stared at him blankly until he said half to himself "Oh, you're German! You don't understand a word I'm saying!" and walked off.