The act of filling a naughty bits orifice (usually vaginal or anal) with milk or a milk-like substance with a similar viscosity and then expelling it in a spectacular explosion, causing one or both participants to become awashed in a "milky way" or manner.
Dude, I went to this porn site and downloaded this brunette getting a milky way from a hot blond Hungarian chick!
By Gay
Milky Way
Right before ejacualting in a girls mouth, pull out and blow it on their face. After this, simply throw glitter on her face, rub it in, and proceed by yelling, "You just got MilkyWayed Bitch!"
A sexual act when a lactating woman is riding a man, she reaches around and grabs his nuts with one hand and squirts her boob milk in the mans face at the same time.