No, everyone knows how to be sarcastic. It's kind of sad really.
eh? why is it sad?
I say this living in the UK, where people are born with sarcasm implants and it's considered the bedrock of all the best humour...?
I assume you're taking 'sarcasm' to mean only the nasty applications of it? There are lighter, less negative uses y'know...
I mean you can have
Mom: I just feel like I need to understand this, you know?
Me: Yeah I know how intellectual integrity's always been important to you.
which is undermining her, invalidating her and calling her a moron basically. Or you can have this:
Mom: let me know what you want for dinner so I don't get the wrong things from the store
Me: Uh yeah, cos like I'm so picky aren't I? You can never tell whether I'll just turn my nose up at something.
Mom: Haha, I guess. I'll just get whatever's on special offer then.
Me: yeah, whatever you fancy, I don't mind
Which is telling her she's worrying too much and it's cool, I appreciate whatever she does for me and she needs to remember that.
And then there's Night's current avatar. So much said, so simply, and the very decision to display it shows a sarcastic mind. And it's funny as hell whilst simultaneously making many valid points.
Sometimes sarcasm is a bit like poetry. It's a way of saying an awful lot very concisely.
It doesn't always have to be "being mean".