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22.
When backhand some bitch for pissing you off and the knuckle marks and laugh at them when they are on the ground crying like a little child
Ali fighting anyone of his opponents
by Anonymous May 12, 2003
 
23.
its a very light backhand slap to the forehead..

this causes ones eyes to squint briefly --like a jap or chink.

its more to get their attention than to punish..
when the ole lady gets things backwards once again-

a quik jap slap sometimes gets her to focus on the issue..
by hunky December 24, 2006
 
24.
Flip-flops or thongs. The Japanese wear these a lot and when you walk they slap your foot.
I can't go to the beach until I find my jap slaps.
by the jap slap dude May 01, 2008