* EarWorm[=/=]MostAnnoyingSound: The theme song. Not helping is that it's simply just "Na na na na" and "Flub" repeated off-key in the background several times. [[https://www.youtube.com/watch?v=0YaeYt2OXzo You have been warned.]]
** One Website/YouTube commenter thinks that the reason that the show faded into obscurity is because so many people turned off the show during the intro.
** Most people who've actually seen this show hate it simply because of its intro.
* HilariousInHindsight: In the episode "Double Feature", Fraz mentions the movie stars of Movieland having [[WesternAnimation/SpongeBobSquarePants swimming pools in swimming pools]].
* NeverLiveItDown: The aforementioned theme song has not helped its reputation in its years of obscurity.
* SoOkayItsAverage: To those who don't mind the annoying theme song, the show isn't all that bad, if not as remarkable as other Nicktoons.
* TheScrappy:
** Both the titular Brothers, Guapo and Fraz, are seen as this due to [[SiblingRivalry their constant arguing]]. Guapo is mainly disliked due to his [[TheDitz ditzy]] Cloudcuckoolander personality. Fraz is just as hated, as many people find his [[CowardlyLion whiny and cowardly nature]] annoying, and they don't like his self-proclaimed bragging when he isn't being a whiny coward ("It's all part of my master plan."), simply due to a lot of things go wrong when he acts like that.
** Tarara Boomdeyay is the biggest one because of her BadBoss personality towards her workers. (Even though Guapo and Fraz somehow see her as "nice" and "special", despite often getting abused by her.)
* TheyCopiedItSoItSucks: A lot of people who HAVE seen it have been quick to call it a bad ''WesternAnimation/{{Futurama}}'' rip-off, despite the fact that the show premiered two whole months before ''Futurama'' did (though production for ''Futurama'' dates back to 1996).
* UncannyValley: The strange animation and bizarre character designs border on this.
* TheWoobie: Fraz, due to his constant paranoia about being doomed.
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