noun
fake breasts; artificial breasts
Slang term for breast forms, padded bras, or surgically augmented breasts. Often used in casual or humorous contexts.
See also: 偽乳
あのアイドル、偽パイだって噂だよ。
There's a rumor that idol has fake breasts.
コスプレ用に偽パイを買った。
I bought fake breasts for cosplay.