When you take a hit of weed and when you exhale your smoke is very white or "milky" looking. Usually milkiest hits come from bongs but they can be achieved through basically anything including a bowl, pipe, or joint. Milky hits are usually what people like to do smoke tricks with such as smoke rings or ghost inhales.
I took such a milky hit man. My atom bomb was so perfect.
by batman is my bitch December 21, 2010