My friend on facebook put a photo of a wrong word used in a sentence, she's a bit obsessed with grammar. I replied and the conversation went along these lines.
Me: I'm not normally a knob about these things but even I think that's bad
Friend of friend: It's not being a knob pointing out when someone can't spell or use grammar correctly.
Me: It is been a knob as not everyone can spell or use grammar right.
Friend of friend: It's 'being' not been
Me: oh do fuck off!
I think I was perfectly reasonable as it's facebook not an exam. I don't go round telling people to fuck off normally but this really annoyed me.
My brother said it was banter my mum is quite cross with me.