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1.
Adjective; to have a

If someone says they're going to have a dirty chinese, it means they're looking forward to what is expected to be an immensely delicious chinese take-away.

An Irish saying, it involves the popular misuse of the word 'dirty' as slang for something beyond the realm of every other positive word in the English language.

It is not used in a racist manner.
Lookin forward to a great big dirty chinese tonight

Had a really dirty chinese last night
by spinme November 16, 2010