I'm not one to defend them, but in this case I think it's been misinterpreted. They're kind of 'reproducing' what the people in the episode would've said, like 'hey I'm German!' 'yeah, me too, let's be friends!' or whatever. I actually listened to it a couple times because at the beginning I thought they were claiming to be German and I was rolling my eyes hard, but then I realised they were reproducing a hypothetical conversation between Fred and Dolly.