List of words coined in popular culture

Modern languages have vocabularies that are derived from diverse backgrounds, and improper nouns occasionally enter popular usage simply because they have been created or re-used in a meaningful way by a sufficiently popular show, performer, group, or website. A word created in popular culture will often be a neologism, but this is not always the case, such as in the case of embiggened.

Websites
Wiki: Wikipedia

TV Shows
Cromulent: The Simpsons

Embiggened: The Simpsons

Literature
Grok: Robert A. Heinlein's 'Stranger In A Strange Land'

Otaku: Manga Burikko

"People"
Misunderestimate: George W Bush