A woman in Michigan was fired for bringing laxative filled brownies to the office for a co-workers going away party. Initially she denied it, but admitted to it after authorities said they would have the brownies tested by forensics. Other employees suggested that there was tension between the woman and the departing employee.
This story reminded me of a certain scene in a movie called, 'The Help'. Never tick off someone who is handling something you will eat. YIKES!