Perhaps this has happened to you. You're at a social gathering, meeting someone new. You're playing the "getting to know you" game and asking all about one another's work and interests. You tell this new person you're a knitter and their face kind of freezes and they have no idea what to say to you. I have finally figured our what is happening in their mind at this moment.
You say, "I'm a knitter."
They see this.
You'd be speechless too, right?