Human semen. Semen has a milky quality. Whey is the liquid remaining after milk has been curdled and strained. Hence, Milky Whey, a play off the name of the popular candybar, "Milky Way."
Black men emit Milky Whey Dark. Obviously.
Also known as cum, jizz, jizm, spooge and many other terms.
After Karla was done blowing me, I splashed my Milky Whey all over her tonsils.
In Bukkake porn, the money shot occurs when multiple men spray their Milky Whey over a single woman's face.