* EarWorm: If you listen, you might as well not even try to get the "Na na na na" theme out of your head.
* FunnyAneurysmMoment: "Being an understudy is like being Princess Di: lots of fringe benefits and no drawbacks!"
* GirlShowGhetto: One of the first childrens' TV shows to break out of it.
* HilariousInHindsight:
** In [[http://www.huffingtonpost.com/2011/07/30/clarissa-explains-it-all-predicts-cowboys-and-aliens_n_914114.html this clip]], Ferguson watches ''Film/CowboysAndAliens''.
** Clarissa making Ferguson disappear in the intro can come off as this considering how much magic Melissa Joan Hart would practice in [[Series/SabrinaTheTeenageWitch her following show]].
** The series ended and ''Clarissa Now'', its attempted CBS spinoff, would've begun with Clarissa becoming a journalist, a career path Sabrina would also take.
** There was one time when Ferguson told Clarissa that he played ''VideoGame/MegaMan10'' in this episode.
* MemeticMutation: Almost no one remembers much about the show anymore besides the title. Probably because to this day, TV shows ''still'' make shout outs like "Yeah, Clarissa, explain it all!" frequently.
** AscendedMeme: Series/The90sAreAllThat promotes the [[{{Twitter}} hashtag]] of [=#ThingsClarissaDidntExplain=]. The [[http://90sareallthat.teennick.com/api/stream/get.tpl?stream_id=8&stream_module_id=33&environment_id=1§ion_id=1 results]] are everything from fashion trends to conspiracy theories.
** Music/MindlessSelfIndulgence has a song called "Clarissa," which includes the classic line "If you're so smart, explain this, Clarissa!"
** Another band called The Paramedic has a song called "Clarissa Didn't Explain This," which in all actuality has absolutely nothing to do with the show.
** Even Melissa Joan Hart herself makes a play on the show's title in the title of her autobiography, "Melissa Explains It All."
* UnintentionallyUnsympathetic: While most of her problems with Ferguson were pretty valid, there were a couple instances where ''she'' seemed like a bully. For example, in one episode, Ferguson seeks her for advice on how to properly date a girl he has a crush on. She deliberately gives him the most outlandish suggestions she can think of to sabotage his relationship with her. Granted, this backfires, but it's still a pretty mean and bullish thing to do.
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