In WWII the japenese use to slap P.O.W's execively as a means of interagateing their suspects. So, the term Jap Slap became popular in that era just as a reference to slapping someone.
HAHA you got Jap Slaped by the cops.
by b from the bay December 15, 2005
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1.(v.) To strike or slap a person across the face in a powerful and painful manner.
2. (noun)A painful slap across one's face.
That dude was talking trash so I japslapped him in da face!

Don't make me japslap you!

Did you see how hard that dude japslapped him?

I'm about to japslap that bitch!
by kirkus maximus February 04, 2010
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Flipflops. Nicknamed JapSlaps because Jewish-American-Princess's wear them and they slap their feet.
Come shopping with me! We can get new solos and jap slaps!
by KatyaMamadjanian August 09, 2006
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The action taken to punish a person for a silly or stupid mistake, often in a playful manner. The name derives from asking the unaware victim to place his or her thumbs on the outer corners of the eyes and stretching the eyes to simulate an Asian appearance. Then the slap can be adminstered without a flinch diverting the blow.
I Jap-slapped my brother when he admitted to my new wife that we had a stripper at my bachelor's party.
by Ron Ziniel December 27, 2005
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Coming from old war movies wherein the American Soldier is being interrogated by the Chinks... basically as the American soldier starts to say something he is backhanded... This repeats until he emotionally breaks down...This word also comes to mind when i think about some of the stuff jessica simpson says... The other thing that comes to mind when i think about Jessica is hot steamy sex.
American Soldier : "Sho- *SLAP*"...
American Soldier : "Sho- *SLAP*"...
etc etc
by Jap Slap June 25, 2004
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To strike someone -- who *really* has it coming -- in the face with the back of the hand. JAP = Jewish-American-Princess.
If you don't shut-the-fuck-up, I'm gonna JAP slap you into next week!
by WonderShe June 10, 2006
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The "Jap Slap", as it has come to be called, is a constant. The Jap Slap IS, WAS, and ALWAYS SHALL BE. the Jap Slap, as most generally described, is the instinctual need to palm-hand someone. The name Jap Slap came to be right after the second world war. The world came to appreciate the Jap Slap as a fine art mastered by the Japanese.
-Your friend is telling crappy Chuck Norris jokes and has been for the last half hour. After putting up with his idiocy for this long a sudden blinding fit of rage comes over you and you "Jap Slap" him.
by DBLF December 29, 2010
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