noun
seatbelt boob; breasts bisected by a strap
Slang abbreviation of パイスラッシュ. Describes the visual effect when a seatbelt, shoulder bag strap, or similar diagonal strap presses between a woman's breasts, emphasizing their shape.
See also: パイスラッシュ
彼女のパイスラが気になって仕方ない。
I can't help but notice her seatbelt boob.
ネットでパイスラ画像を検索する人が多いらしい。
Apparently many people search for seatbelt boob images online.