An acronym for the popular anime/manga/television show Boys Over Flowers. Most commonly used for the Korean drama live version.
It was originally Hana Yori Dango as a popular Japanese manga (like American comics) and was turned into three different live action versions, one in Taiwan, called Meteor Garden, one in Japan, called Hana Yori Dango, and one in Korea, called Boys Over Flowers.
It has also been made into one spin-off, 2 live action movies, 1 anime movie and also an anime series.
It is also known as Boys Before Flowers.