Bukkake Milk

Bukkake is a group sex practice that features a woman being ejaculated on by multiple men.
Theories as to the historical origins of bukkake vary, but one theory is that bukkake was popularized in Japan by Japanese adult video companies in the first half of the 1970s. It is to be assumed that a significant factor in the development of bukkake was the mandatory censorship of genitalia (porn mosaic) in Japan.