A pop-up in the form of an over-zealous new employee trying to fit in with his new co-workers (or any uninvited interuption). This new guy will "pop-up" into a conversation in progress; most likely with something unimportant or unrelated to say.
We were talking about our not-so-favorite customer when Jonathan came out of nowhere with an about:blank regarding an obscure movie quote, complete with a ridiculousScottish accent.
You type this into google when you see it loading a page and find nothing but this definition so you get curious and click it and now your getting really bored. Maybe get something to eat or skip class. idk.