[RTO]

That is news to me... Never heard it used in any other context except Vietnam... but then I’m only 47.

[the808bass]

Yeah, I just found that out a day or so ago when this same story was starting to resurface.

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gook2      /guk/ Pronunciation Key - Show Spelled Pronunciation[gook] Pronunciation Key - Show IPA Pronunciation

–noun Slang: Disparaging and Offensive.

1.	a native of Southeast Asia or the South Pacific, esp. when a member of an enemy military force.

2.	any dark-skinned foreigner, esp. one from the Middle East.

3.	anyone who is offensive to others because of stupidity, coarseness, etc.

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[Origin: 1930–35; of uncert. orig; cf. earlier googoo, gugu, as opprobrious term for a Filipino, and perh. comparable relationship of kook to cuckoo]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.