To Jap Slap someone, is to slap them when they are not aware of the incomming slap. (I.E Sneak attack)

Comes from when the Japanese bombed Pearl Habor in sneak attack fashion.
"When Alex wasnt looking I Jap slapped him right in the back of the head"
by Gary B January 13, 2005
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A highly technical, extremely dangerous martial arts move in which the individual performing the act strikes their victim with one side of their open hand, then immediately reverses the course and brings the other side of their hand accross the victims face.
My wife wouldn't stop sobbing after her cat died, so I jap slapped her and put her to work on the dishes. Sometimes you have to go that extra mile to help with the healing process.
by Stabsunteroffizier Wunderbar February 29, 2008
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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 30, 2011
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When a person is slapped twice across the face, and the repercussions are equivalent to that of two atomic bombs- Hiroshima and Nagasaki style!
I was sitting here minding my own business, and I heard the kids making noise, so I jap slapped my BITCH ASS wife across the room.
by Da Home Skillet December 13, 2010
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An open handed slap to the face. Reasons: stupidity, retribution or to rebuke a whiner. A callous and contemptous blow in order to restore sanity in their own little world.
I jap-slapped Ted for complaining about sprinkles on his donuts. Then I jap-slapped Jessica for being so stupid as to agree with Ted.
by Bodean March 16, 2004
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To slap someone so hard they become slant eyed.
Back off my food before I jap slap you.
by kmac_1313 August 18, 2004
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Against political correctness, it really means to be hit with the back of the hand. Now its known as a pimp slap by yuppies trying to be urban
If you dont shut up i'll jap slap you so hard!
by daveybaby March 16, 2006
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