How much script do you actually NEED for a bukkake vid?

BTW, got this from http://www.redbrick.dcu.ie/~melmoth/japan/b.html

"Ejaculating over a woman's body, and then watching in delight as she plays with your semen."

there's more, but it seems like we can't nail down some specifics, eg does the term BUKKAKE only cover no-wiping, no-intercourse, little-interaction facial sessions; and was it a common cultural practice or just something done on a few occasions or to prostitutes.

Anyone wanna do a Bukkake research project...think of all the fun "Lab hours" we'll have!

Peace.