Simpsons created it. In the episode where jebediah springfields quote “a noble spirit embiggens the smallest man” is scrutinized for “embiggens” not being a word. They say it’s a perfectly cromulent word. Which itself was not a word, but given the context has a clear meaning. And people decided to start using it as a joke, and then enough people used it, it eventually became real.

Technically all words work that way, but this feels just that little bit more artificial. There wasn’t really a need for it, we have words for that context already, so it wouldn’t have naturally spread. But it’s still fun to have watched it happen over time, knowing it was probably gonna happen even though it shouldn’t have.

Edit: the details may not be exactly right, it’s been nigh-on 30 years now since I’ve seen that episode, but that’s the gist of it, from what I recall.