A subculture holiday observed in Japan. Set on November 29th, it involves the celebration of characters with "nice bodies" (especially large breasts or fat bellies.)
11/29 can be read phonetically as "ii niku" (see Wikipedia's article on goroawase), which has the literal meaning of "nice meat", but figuratively means "nice body".

Pixiv Encyclopedia credits Boku wa Tomodachi ga Sukunai character Sena Kashiwagi with inspiring this name, as her relatively generous figure caused Mikazuki Yozora to begin addressing her as "meat".
Japan's meat industry, stores, and restaurants have been known to run promotions and offer deals coinciding with the date, a much more literal and consumer-friendly form of "Nice Meat Day".

In some cases, this holiday is observed on months that aren't November; the 11 ("ii", "nice") is omitted, rendering the holiday as the literal "meat day" or the figurative "body day".

See also

• Big Dick Day
• Minichin Chubby Day
• Vore Day
• Zangoose Day
• Reverse Zangoose Day