Where I work, I see and hear many interesting things. Some are amusing. Some are frightening. Some you will only ever see/hear in our building. They’re things that just  don’t happen outside those four walls. Someday, after I retire, I’m going to compose a book of some of the best things I’ve seen/heard.
Here’s a sample. I mean, seriously, where else are you going to find this? It was in the breakroom on the counter:
Invisible, perhaps. But are they fat-free?