My old sergeant and I came up with the perfect way to rob a bank (or so we thought) for two hours while I was on shift. Never tested it out though. 

[@Chasebloodcrest] If you want to bring down HR, wait until an office luncheon and put something in various bottles of soda/juice/water as you pour yourself some. Then discard that one discreetly and just say you drank from the untouched bottle.