子供部屋未使用おばさん
Meanings
1
older woman who has never had children
internet slangderogatory
Internet slang, derogatory. A play on 子供部屋おじさん, referring to a mature woman who has never given birth, often implying she is past typical childbearing age. Used in online discussions to criticize or mock.
See also: 子供部屋おじさん
The term 'kodomobeya mishiyō obasan' is occasionally used online.
She self-deprecatingly called herself a 'kodomobeya mishiyō obasan'.