What I say: I have selective mutism. It's a crippling anxiety disorder that prevents me from speaking in most situations. When I meet you in person for the first time I won't be able to speak to you. There's a chance I won't ever be able to speak to you.
What they hear: lolz yeah im kinda shy but if you're really nice to me im sure you'll be able to cure me and i'll be chatting away to you within minutes of meeting you