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20.
to slap someone in the crotch wilst only hitting their japseye. Quite a skillfull feat and has to be done right otherwise it is just like getting hit in the balls. Performers of the move should be comended even by the victim.
"awwww did you see that jap slap mark got john with... it was sooo skilful musta hurt like a bitch."
by theknowledge April 28, 2007
 
1.
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 12, 2005
 
2.
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
 
3.
jap slaps are flip flops ... they were worn by japanese originally and they slap your feet. Jap Slaps!
she is wearing her hot pink japslaps
by nellie March 29, 2005
 
4.
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 28, 2008
 
5.
A strong slap given out of annoyance or meanness which leaves the recipient slightly dazed and confused.

From the Malay phrase "penampar Jepun" to describe harsh treatment by Japanese soldiers during the Malaysian occupation of WWII.
HAHA! My dad just pimp-slapped, bitch-slapped and jap-slapped my little brother.
by Big Jux March 12, 2006
 
6.
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
 
7.
A quick, compact baseball swing popularized by Japanese big leaguers such as Ichiro Suzuki, So Taguchi, Akinori Iwamura, amongst others.

Most effective with a left handed batting style, the jap-slap has become popular with Hispanic and American Major Leaguers such as Juan Pierre and Brett Gardner.
Akinori just put the ball in play, jap-slap it if you have to.
by FRICK TICK June 02, 2011