I work in IT, and therefore we are devoid of personality and any sense of humour is completely imagined. Things such as monitors being completely coated in post-it notes, pallet jack races, chairs being randomly tightly packaged in brown tape and bubble wrap, chairs being adjusted in uncomfortable ways, mice and/or keyboard cable lengths being fixed so that you can't move them into a comfortable position, desktop wallpapers being adjusted, OCD people being messed about with, long-range wireless mice being used on unsuspecting individuals, dodgy emails and chat messages being sent when you forget to lock your screen, white liquidy substances being left on keyboards, all that kind of stuff? This is all done with some kind of humourless, logical reasoning.
And then there are the random drawings left around the place of various strange things that someone once drew when they were bored. I miss that guy.