A public bathroom stall with covered in tweets. These tweets are usually sexual or graphic in nature and usually posted by anonymous. Twitter Shitters are more commonly found in male restrooms. However, the dirtiest and meanest shitters are found in high school girl washrooms.
Guy1: " Dude, I just came back from the bathroom and somebody fuckin wrote all about their monster shit they had while jerkin off! It was fuckin disgusting"
Guy2: "Well that's what you get for goin in the Twitter Shitter."