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YMMV / Osomatsu-kun

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  • Ear Worm:
    • The ending of the 1988 animated adaptation, "Osomatsu-kun Ondo". Try to get that song out of your head— it's catchy enough that you may start humming it or singing the first lines whenever it crosses your mind.
      • It seems that it's also an In-Universe case, since other characters that are not mentioned in the lyrics, like Totoko, also seem fond of singing it when they are walking down the streets.
      • Same can be said for the 1988 series' opening, "Seicho Osomatsu-bushi", there's a reason why it's pretty much the theme song for the series as a whole note  and it was even used in the 2012 pachinko game.
  • Ensemble Dark Horse:
    • Tougou, a one-shot character with a terrifying two-faced personality became this for mid-2010s Japanese fans.
    • Back in the day, the original Darkhorses were Iyami and Chibita. They stole a lot of the scenes they were in, to the point where the focus started to shift to both of them.
  • Germans Love David Hasselhoff: Totoko's brother, despite an early case of Chuck Cunningham Syndrome, became a popular minor character in the West.
  • Harsher in Hindsight: Osomatsu makes constant references to wishing he was an only child, or, bar that, just the only kid in the house. In the What If? situations, his siblings lead somewhat miserable lives without him, and in one of them he ends up living alone and taking care of his ailing mother and is balding due to stress. And considering that in his early-mid twenties he secretly regards his bothers as Living Emotional Crutches, it's a wonder if he even means it half the time.
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  • Hilarious in Hindsight: The 1980s version of Kinko was shown to be fierce rivals with Totoko. Come the timeskip, not only does Totoko go head-to-head with Nyaa-chan the same way, but she actually becomes friends with a similarly named girl.
  • Idiosyncratic Ship Naming: The brothers each have their own platonic duo names, each different from the other:
    • Osomatsu/Choromatsu gets the name "Sokudo".note 
    • Jyushimatsu/Ichimatsu is called "Suuji".note 
    • Karamatsu/Todomatsu is referred to as "Zaimoku". note 
    • There's other duo names, but Japanese -Kun fans would get mad when they get used. General fans will get mad/offended if those duo names are used for anything other than platonic.
  • Incest Yay Shipping: Although this one will come with full force with the 2015 revival. Osomatsu/Choromatsu has existed even before the sequel aired due to a good chunk of plots involving the brothers being started by the two of them. Some fans regard it now as 'The Original Ship', even complete with fanworks and doujins.
    • The brothers get paired up with each other, but this is the most well known example.
  • Memetic Mutation:
    • Iyami's "Sheeeeh!" pose, to the point where even modern comedy anime use it as a stock shocked pose. Back in The '60s, everybody from Godzilla, John Lennon, to the current crown prince of Japan has been filmed or photographed doing the pose.
    • Choromatsu's "Anonee" face from "Osomatsu-kun in 40 Years".
    • "Is this Nobita?"/"Nobita is the seventh Matsu"— usually said by people who notice the two series' similar art styles and the strikingly similar main characters. Also counts under Hilarious in Hindsight, as Akatsuka and the Doraemon creators worked under the same roof at one point.
  • Never Live It Down:
    • After seeing Choromatsu's much more responsible personality in Osomatsu-san, 21st century fans will never let go of the scene where he goes Drunk with Power and whips his brothers.
    • Nor will he live down kissing Tensai Bakabon 's Kaoru-chan for a whopping one and a half pages in one bonus chapter.
  • Nightmare Fuel:
    • Everything Osomatsu had to go through in "The Terrifying Lodger". Just imagine being a kid and being forced to keep mum about your customer's shady habits because you're not quite sure what he'd do to you if you don't. And Togou appeared to be such a nice fellow, too...
    • Choromatsu going insane and stunting his growth after he thinks Osomatsu died in a cave in during "Osomatsu-kun in 40 Years".
  • The Problem with Licensed Games: Osomatsu-kun: Hachamecha Gekijō is regarded as one of the most infamous Megadrive/Genesis games in the Japan community. A confusing level design, awful controls, being ridiculously short once you figured it out the confusing design and being downgraded from it's initial 4MB to 2MB, not to mention christmas rushed and overhyped contributed to the infamy of this game.
  • Suspiciously Similar Song: One of the background music used in several episodes of the 1966-67 series is a knock-off of "Sing, Sing, Sing (With a Swing)" by Benny Goodman. You can hear the ''Osomatsu'' version at the 3:55 mark.


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