I know they don't mean it, maybe sometimes they do, but its true.
You know when someone has to be right about everything. Thinks they're an expert about a particular subject but actually they're not. Yeah, things like that annoy me.
I know I'm not perfect, far from it, but I hope I don't come across as big headed and a know-it-all. If I know about something I'll say but (would like to think) am quite happy to say I don't know rather than waffle and make something up to sound like I do :/
Don't jump to conclusions, this isn't a rant at anyone in particular.