I just saw an episode, I think from season 5 of The Office last night. It’s called “Frame Toby”. Someone in the office left the microwave in a really filthy condition after using it. So Pam surreptitiously put up a sign:
I don’t doubt Dunder-Mifflin has access to a lot of different labels, so I couldn’t help but wonder that Pam might have toned the sign down a little by using a full sheet label which was white. Yellow is just too in your face.
like this one: