竿さお姉し妹まい

noun

pole sisters; women who have slept with the same man

Vulgar slang term for women who have had sexual relations with the same man. The literal meaning is 'pole sisters', playing on 竿 (pole) as a phallic metaphor. Compare with 穴兄弟 (あなきょうだい), the male equivalent.

See also: 穴兄弟

• あの二人ふたりは竿さお姉し妹まいらしいよ。

  Those two are apparently pole sisters.

• 竿さお姉し妹まいって言こと葉ば、初はじめて聞きいた。

  I've never heard the term 'pole sisters' before.