Kazunokotenjou, or "herring roe ceiling" is a Japanese slang term referring to the ridges one can feel on the anterior vaginal wall being similar to the texture of cured herring roe.

Not all women have kazunokotenjou but when they do it feels really fucking good.

Used as both a noun and an adjective in Japanese.
"anoko wa kazunokotenjou datta" (she had a kazunokotenjou)
"That girl had some good kazunokotenjou"
by Pakoru October 27, 2021
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