Bukkake is a group sex practice wherein a series of men takes
turns ejaculating on a kneeling woman or man. There are strong
overtones of erotic humiliation in this practice. When the term
bukkake is used in Japan, it usually refers to a method of
preparing noodles and not the sexual act.
The practice supposedly originated in the feudal age in Japan to
punish unfaithful women a woman who had disgraced her husband was
first tied to a post in a kneeling position and then forced to
endure being ejaculated on by every man in the community. However,
this is most likely an urban myth as the practice originated in
Japanese pornographic movies. The most likely explanation is that
in Japanese pornography, male and female genitalia cannot be shown
and are therefore either pixellated or blurred. However, semen may
be shown, thus the only practical way to make Japanese pornography
more extreme and "hardcore" is to increase the amount of semen,
hence the invention of bukkake-style videos. In Japanese
pornography, bukkake is usually portrayed as an act of erotic
humiliation, while as western pornography tends to portray it as an
enjoyable act.
Bukkake is the base form of a Japanese verb, but used alone it is a
noun meaning to splash or dash. The verb bukkakeru (to dash
[water]) can be decomposed into two verbs: butsu and kakeru. Butsu
literally means to hit, but in this usage it appears to be an
intensive prefix as in buttamageru or butchigiri. Kakeru means to
shower or pour.
Indeed, bukkake is more commonly used in Japan to describe a type
of dish where the toppings are poured on top of noodles, as in
bukkake-udon and bukkake-soba.
A "lite" version of bukkake also exists, and is known as "gokkun".
Gokkun is an onomatopoeia, which translates into English as "gulp",
i.e., the sound one makes swallowing. People outside of Japan often
mistake gokkun for bukkake.
Many women have gone public regarding their sexual enjoyment of
bukkake, including Dr. Susan Block and Catherine Millet.
A number of sources have stated that bukkake may have a non-obvious
risk of infection by HIV and other blood-borne infections such as
hepatitis through semen contacting the surface of the eye.
from
wikipedia