A person engaging in planning and execution of heinous acts intended to destroy a public toilet. The goal is to take out as many people as possible.
My co-worker is a toilet terrorist because he left an IED (Improvised Explosive Dookie) in the toilet, preventing use of the bathroom for more than an hour. All that had attempted entry were tested for hazardous levels of exposure. Use of a sniffer is recommended to test toxicity levels.