But seriously yes.
There was a properly schziophrenic/bipolar lady that used to frequent my old cong's KH. During the meeting, she would write things in the air with her fingers. She would talk (loudly) to herself during the meeting. She would walk up to the platform in the middle of the public talk and sometimes geniflect (sp?) at the speaker, sometimes put a bunch of dead weeds on the paltform and sometimes spray deodrant at him. I was a kid at the time and thought it was hilarious. I would often hope she's turn up at the meeting just to liven it up!