This is another great story! We once played a practical joke on a fellow co-worker who, if I were honest, none of us liked. We got Security involved...planned it all out, etc. We placed in his personal drawer a small zip-loc bag with powdered sugar in it. None of us knew what actual cocaine might look like and that's the best we could come up with. Anyway, we called our security friend after we put the powdered sugar in his drawer and the officer came and did a "random inspection". Well, guess what? He pretended that he had found cocaine in the drawer. The Tech went Ballistic!!! Although a very mean prank..a lesson he apparently took to heart! He was much more tolerable after that.