Sure. There was a time when a colleague hid all the staplers in the office in the morning. Everyone was so confused when they couldn't find them to staple their important papers. It took them hours to realize it was a prank and finally found all the staplers in a big box under the meeting table. It was really hilarious.
There was a situation where a new employee thought that 'Casual Friday' meant coming to work in pajamas. So he showed up in his full-on sleepwear. Everyone was really surprised at first, but then they all had a great laugh. He was a bit embarrassed but it became a really funny story in the office.
In an office, there was a rumor of a 'ghost' in the supply closet. One day, a new employee heard the rumors and decided to check it out. When he opened the door, a whole bunch of old papers and files fell on him. It turned out that the closet was over - stuffed and the door was not properly closed. So every time someone walked by and made a little vibration, things would shift and it sounded like there was something spooky going on inside.
At my office, we had a really strict boss who was always very proper. One day, a huge spider dropped right on his head during a meeting. He completely lost his composure, jumping up and swatting at his head. His face was so red, and we all tried really hard not to laugh out loud. It was a funny office horror story because it was so unexpected, especially for someone as uptight as him.
There was a case when an elderly man came to mail a postcard but couldn't remember the address. He started describing the place in the most comical way, like 'the house next to the big tree that looks like it has a face'. The clerks had a hard time but also couldn't stop laughing.
At one office Christmas party, the boss decided to do a Secret Santa gift exchange. One guy got a huge box. When he opened it, there was a life - sized cardboard cutout of the boss with a speech bubble that said 'Work harder!'. Everyone burst out laughing, including the boss himself.
A colleague of mine went into the office bathroom. He thought he was alone and started singing at the top of his lungs. But then another guy came out of one of the stalls. My colleague was so embarrassed and ran out red - faced.
Sure. There was this one time in my office when a colleague accidentally sent a very personal email to the whole company instead of just one person. He was so embarrassed but it was hilarious for the rest of us.
Well, there was this time in the office when a new employee thought the photocopier was also a scanner. He tried to scan a document by putting it on the copier glass and then pressing random buttons. The copier started making all kinds of strange noises and printed out dozens of blank pages. It was hilarious.