Japan’s Cat Testicle Calendar is Here for Nyantama Fans to Go Nuts With - NSFW?

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Preorders are currently open for the 2025 edition of the Nyantama Calendar. As always, I feel it’s my duty to explain the unusual linguistics involved. In Japanese, nyan is an onomatopoeia for a cat meowing, and by extension can be used to refer to cats themselves. Tama, meanwhile, means “orb” or “orbs” (Japanese doesn’t distinguish between singular and plural nouns), which is also a slang word for “testicles.”

So yes, the Nyantama Calendar is a calendar with pictures prominently presenting cat balls.

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“Please feel soothed by the powered-up cat testicles,” says Hagoromo in the announcement that promises somehow-improved cat nuts compared to the previous iterations of the calendar, which has been published since at least 2022.

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To keep the good-luck ball rolling, purchasing the calendar through Amazon Japan or Rakuten also gets you a good-luck nyantama card, sized to fit in your wallet or smartphone case, so that you can have cat testicle photos close at hand even when you have to leave the comfort of your cat testicle calendar-decorated home.

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The 2025 Nyantama Calendar consists of 28 40 x 30 centimeter (15.7 x 11.8-inch) pages, is priced at 1,760 yen (US$12), and can be ordered through Amazon here

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