Have you ever done something else but a colleague got in trouble?
Last week during a patrol I had to tap the phone against a digital patrol point to prove I had been into the room. I wasn't aware that these rooms with digital keys can open on the inside without a key since I've never seen that happen and all of these doors are open at all times. My office has an issue where if the door is locked then you can't open it from the inside and I thought all of the doors with digital keys are like that.
As a result I used a portable light to keep the door from being shut. I totally forgot to remove the light and shut the door and when I went back to work today I got told by a colleague that he and another colleague got a real bollocking (British for being told off bad). Turned out one colleague got in trouble for not telling me how all the doors work since he's a senior colleague and knows the whole building as well as being responsible for teaching new people to the building. The other colleague got in trouble since he was on days right after that night shift and didn't spot the door wedged open so it was assumed he wasn't paying attention on his patrols. The email regarding it got sent out to everyone as the room is the server room with all the private information and the light I used is considered an emergency light. It went all the way up to building management and every contractor in the building.
I learned to never make that mistake again.