OF COURSE there is a story---there is ALWAYS a story!!!
Well, Mr Prospect, the true Casein was used in the early days of penmaking--the 20's I'm told.
Now, with the advances of science, we can give you that same "high end" look in today's futuristic and GREEN materials!!! NO COWS were milked in this process. Just a nice oil well was drilled and after the black stuff was processed out to use in your polluting car, we took the residual and made this lovely pen.
IF we use more pens, we can create a shortage and make your gas MORE expensive.
See, there's a story!!!
(May want to tailor it to YOUR personality though!)