Alright his other office joke was that he took away a rubber chicken from one of his co-workers desks. He took it around town taking pictures of it, he also thought of doing a story behind it. So he brought it to main recognizeable areas, then at night he went to a bar, had pictures of the rubber chicken drinking, also meeting ladies, the rubber chicken driving, then getting arrested. He later put a scrapbook together and gave it back to his co-worker with the rubber chicken, she absolutely loved it. The joke went futher when another person took it on vacation with them and took photo's of that area.
Another one was taping a co-worker to a chair, then leaving them in the elevator after. The person had help after a few floors though.
I love his sense of humor XD