(noun) The worse kind of handshake - similar to the jewish handshake but contains the oscillation frequency close to that of the square of the speed of light (shitingly fast). The result of the kimchi handshake is obviously kimchi.
korean dad: "hey ommaa it seems we have very little kimchi left in our storage, could you please make some more?"
korean mom: "certainly! pull your pants down and let me give you the Kimchi Handshake!....dinner will be ready soon!"