It means multiple things. Basically, its a WWII reference, meaning:

1. Karate chop. Japanese were known by soldiers for their superior hand to hand combat skills, particularly in karate.

2. To strike a person unexpectedly, similarly to a sucker punch.

3. Loosely, it refers to an unexpected attack or ambush.
Wow! Did you see Tom get into a fight, yesterday? He hit that guy with a vicious jap slap and almost knocked him out.
by Legendary63 July 21, 2018
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Not actually a jap, but is known to hang out with jap and live the jap life.
"Yo, yung Jon asked out this girl from his high school."
"Oh shit, she must be a jap like all of those other girls from that school."
"Nah man, it's all good. She's just a fringe jap."
by YungJon January 23, 2016
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A word used to describe stealing one's parents car and picking up friends (usually late at night)
Henry do you want to run a "jap mission"
Me and the boys about to run a "jap misson"
by Yxngflame August 27, 2020
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1. A man who on boys night out only hunts for japanese birds.

2. He is more of a smasher rather than a lover.

3. A man that does not hold hands with girlfriend.
after a few beer the jap hunter will be out!!!
by Friendlydude2k February 17, 2010
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A Jew fro that is so big and frizzy you could turn them over and mop the kitchen floor w them . Based on the old black song “R A G M O PP spells ragmop “ but w a Jewish American prince or princess as the protagonist.
That chick w the big bazooms at rhe party that was taking real loud trying to sell you real estate had frizzy hair , she had a “JAP - MOPP spells JAP-MOPP“ ie japmop
by Peepcreep July 2, 2022
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Jap: derogatory slur, slang: Name for Japanese National. Predominately used during World War Two.

Plural: Japs
We could continue the Island Hopping strategy for 10 years at the cost of a million troops, or bomb the Japs with that new type of bomb and see what happens?
by Mouth hole March 15, 2023
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omg its Jap!
by japtgp November 11, 2021
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