sexual position with one leg held up
A specific sexual position where the man straddles one of the woman's legs while holding the other leg up. The term is used in erotic contexts and is not common in everyday conversation.
Matsubakuzushi is a sexual position where one leg is lifted.
The term literally means 'pine needle collapse' or 'pine needle breakdown', likely referring to the shape or arrangement of the bodies resembling scattered pine needles. The exact origin is uncertain.