You know what I hate? Like, REEEEAAAALLLYY hate?? When people answer questions that were directed at them, as a single person, with "WE". Or, when I tell one of my friends to 'have fun' at something and they respond with 'we will!'. I wasn't talking to your partner - I was talking to YOU. I don't give a rat's ass if your girlfriend or husband has fun! And if I do, I'll tell them to have fun too! ARRGG. It irks me.
What's worse? When they say things like, "Oh, we don't see movies like that" or "We don't eat seafood" AAHHH!!!