Yanki

[Lanell]

A [yanki] is simply a subculture that was popular in Japan in the 80s and 90s. Moreover, it was basically the style of [delinquent] students. They were characterized by punch perms or pompadours, shaved eyebrows, altered [school uniforms], popping squats, being poor students and causing violence or trouble. [Yanki] is a term that applies to both boys and girls. Although it is said some yanki would be recruited into the [yakuza], or Japanese organized crime, this is not always true. Many yanki simply joined the regular workforce and lived regular, productive lives after high school. Being a yanki was simply a way to enjoy youth and lash out at society similar to the punk rock movement in the West.
[Bosozoku] had a similar style to yanki, but were known for their outrageous and illegally modified motorcycles. Their outfits usually consisted of long jackets or flight suits consisting of complicated [kanji] with multiple meanings. On occasion, bike gangs would gather and parade down streets interfering with traffic or waking people at night. In their [heyday], both yanki and [bosozoku] were considered a menace to society.
The term yanki has been popularized in American culture through the movie Kamikaze Girls. However, in Japan it comprises whole a genre of comics, movies, and even music.