Unfollow T-Shirt
To me, this one-word t-shirt actually says a lot. It's all about simplying one's online life—keeping use of social media to a minimum, yet continually cultivating the best experience possible from your limited time there.
Or, you could see it as a command for people to unfollow you. It's sort of a wearable Rorschach test that way.
Get it for $30.