When a shoulder strap passes [[between breasts|between the breasts]]. Most often as a result of wearing a bag or purse, but anything with an over-the-shoulder strap (such as a "guitar":/posts/2128530, or some "seat belts":/posts/2821673) can produce this. As noted in post #648367, in Japan this is referred to as "π/" [i](pi-slash, "pi" being read as "pai", oppai)[/i].

h4. External links

* "Blog entry about this phenomenon":http://bangin.wordpress.com/2009/10/14/%CF%80%EF%BC%88%E3%83%91%E3%82%A4%E3%82%B9%E3%83%A9%EF%BC%89paisura%C2%B4%D0%B4%EF%BD%80%EF%BE%8A%E3%82%A1%EF%BE%8A%E3%82%A1/
π/ πX タクティカルパイスラッシュ パイスラ パイスラッシュ パイクロス