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8.
The act of having unprotected sex and, without warning the partner, screaming "HADOUKEN!" during the moment of climax.
Her: "Oh yeah, baby, cum with me now!"
Him: "I've almost reached my limit!"
Her: "I'm cu-"
Him: "HADOUKEN!!!"
Her: *Punches him in the balls* "You jackass!"
Him: "lol, ow..."
by Ryu-sensei November 05, 2011
 
9.
The hadouken, originally Ryu's special move in Street Fighter, is now an intricate sexual move involving a can of hair spray, a Zippo lighter, and an orgasm.

Directions: While doing a girl from the back, right as you orgasm you have to line up the Zippo with the hair spray, thus spraying a large fireball toward the back of her head. At the moment of incineration, you must yell out "HADOUKEN"!
"Hey dude, where's your girl??"
"Oh, she's still in the hospital... I totally gave her a hadouken last night!"
"Oh snap, does she have any hair left??"
by Dr. Nofelgood September 18, 2009
 
10.
a manifestation of one's ki used to attack by bending the space around him through subconscious brain wave patterns.
by Anonymous July 01, 2003
 
11.
A) Literally "wave motion fist," the hadouken is a special move utilized by the likes of Ryu, Ken Masters, Akuma, Sakura Kasugano, and Gouken. It is executed through channeling the ki into your fists and releasing it into a ball of energy from there. Dan Hibiki has a weaker variant of this move, called the Gadouken, literally "self taught fist." QCF+P!

B) Some lame rock band from England that couldn't come up with an original name.
a) Spam Hadoukens, Win Game

or

Ken: Hi, Ryu!

Ryu: HOW DOOO, KEN!
HOW DOOO, KEN!

b) Don: There's a band named "Hadouken?" That's sweet!

Belle: Hell no, that's lame. I suppose now there'll be other bands called "Shoryuken!" or "I'dLikeSomePoundCake!" or however the hell that last one is pronounced.
by Jack Spearow May 05, 2010
 
12.
Often used as a greeting in place of the usual "Hello" but is especially used to convey intense feelings of lust when first seeing a particularly attractive member of the opposite sex
"Hadouken to you sir"

"Hadouken!" (pronounced like Leslie Phillips when he says 'well hello')
by Polish Jew August 30, 2007
 
13.
When one is fisting a partner and one hand is already inside the ass/pussy and the other hand is worked in along side it. You then work both arms in and out at the same time like the motion Ryu performs in the Street Fighter series. Can be seen in the 70's porn titled "Candy Stripers". HADOUKEN may or may not be yelled as the moved is performed.
fisting, double penetration, Hadouken
by japanda82 January 28, 2012
 
14.
A renowned sex move.
To find a (usually male) friend, with a willing older lady (possibly gilf).
The friend lifts the dame's vagina up to eye height. Participant

then gives a dragon uppercut into the lady's mimsy while
screaming HADOUKEN! In reference to the famous cult classic Street Fighter move. The results are stimulating.

IF one cannot find a willing participant, lay said lady on a table and try out RYUKEN. results are equally effective
Stew "hey Cecil, remember when we Hadouken'd your Mother?"
Cecil "good times good times"
by Kenneth_the_quim May 15, 2010