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1.
A Chinese person that could be a nigga if there skin wasnt yellow. Chinka derives form the last syllable of the word nig-ga, and the word chink which is a racial slur for chinese people but then again so was nigga 100 years ago.
Kimjin-Kanichiwa my chinka.

Saddeed-Yeaaaa my chinka.
 
2.
(N.) A person of Chinese ethnicity. This is a way to call a Chinese person a "chink" without insulting them. Adding an "a" to the end of any insulting name makes it OK.
"Chinka be trippin!"

"Wetbacka piece of crap!"
by BossStatus94 January 26, 2012