What is べ at the end of a sentence? I'd prefer a reply from someone who actually knows it rather than someone who just rikai-chans it because I'd like a little more information about it. I don't hear it very often. Is it from a dialect? If so, do you know where?
Also, when it comes to speaking to your girlfriend/wife, is it considered rude to use やる-form? As in, 買い物を買ってやる。 ? Also what about 「俺」？ I know that might be somewhat rude to just a girl, but if it's your girlfriend I imagine it might be different. Then again, I've seen people use polite speech with 「俺」..