(colloquial, Singapore, Singlish, intransitive) To have diarrhoea.
It is like going to a place with no 'jamban' [toilet] but you have to 'lao sai'.
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(colloquial, Singapore, Singlish) Diarrhoea.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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