Whole Jin Gang ~ Whole Gene Gang ~ Whole Gin Gang?

Seems like this is a Singapore term. Anyone care to shed some light?

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http://www.singlishdictionary.com/singlish_W.htm

whole jin gang, the 

/jin, dʒɪn/ n. or pron. 

[origin uncertain, poss. < engine gang a gang of people working on an engine; 

or chain-gang a gang or number of convicts chained together while at work, etc., 

to prevent escape]  The whole group, everyone.

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