Pai slash

In Japanese culture, π/ (パイスラッシュ or パイスラ, Romanized Paisurasshu, pai sura, paisura or pai slash) denotes the appearance of a woman's breasts bisected by a diagonal strap (slash), such as an automobile shoulder harness or purse worn cross-body.^[1] The term involves a play on words of the Japanese word for breasts, oppai.^[2][3] The term began to appear on the Internet in June 2006.^[4]

There is a similar term in Hong Kong called 𠝹波袋 (or 鎅波袋, lit. 'cutting the breasts'). ^[5]