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4.
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 The Milk Man Cometh December 05, 2011
 
1.
The act of a female rubbing hot, melted chocolate over a mans penis. She then continues by giving the man a regular blow job from where the man ejaculates and mixes in with the chocolate creating a "milkyway". (The milky way is a spreading paste use for multiple activities eg. on bread, that consists of white and dark chocolate)The female can then continue licking the penis where she gets a mixture of both cum and chocolate.
That chick over there gives the best Milkyway's.
HOLY CRAP, that school girl on the corner is handing out FREE milkyways!
by SerBSPeeD September 01, 2004
 
2.
When a girl masturbates a guy with two hands and gives him a blow job at the same time.
1. Abby gave Timmy a Milky-Way as he sat on his couch in the living room and played video games.

2. That Sorority chick gives great Milky-Ways.
by Frat Guy 2009 May 06, 2013
 
3.
The act of sunny-side upping your own testicles.
guy: dude, I just got dared to do a milkyway
by th3 c00l guy November 13, 2009
 
5.
Milkway or milkywaying as it is known is the act of pouring luke warm milk from fine bone china and only fine bone china into a womens particulary loose vagina, im talking like throwin a hot dog down an alleyway loose, and then proceeding to either fist, foot or stump pile drive her causing the milk to squirt out in the form of the milkyway galaxy. CAUTION ENSURE LUBRICATION OF THE FIST BEFORE INSERTING AS CASES OF HANDS GETTING STUCK AND THE FIRE BRIGADE BEING CALLED HAVE BEEN KNOWN TO OCCUR.
Man: Oh Edgar such a lovely night, perfect for a bit of milkyway wouldn't you say darlin.

Woman: Oh I'll get the fine bone china teapot!!!
by Jonny Bloggs January 08, 2008
 
6.
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 Milky Wayed Bitch!"
I Milky Wayed your girlfriend last night!
by The Cullen D December 26, 2009
 
7.
When you cum on a girls face and there is a line running down to her chin.
"I gave this girl a Milkyway, right when I came."
by Slappy Fack November 30, 2006