The story
A colloquial interpretation of the phrase what do you think? with reorganized syntax, demonstrating optional wh-fronting in Singlish. Analogous to certain sentence structures in Chinese, e.g., Hokkien 汝儂咧講什物？ /汝侬咧讲什物？ (lír-lâng leh kóng sím-mih?, “what are you all talking about?”), in which the interrogative word 什物 (sím-mih, “what”) remains where it is and does not move to the front of the sentence.
Etymology from Wiktionary, CC BY-SA 4.0.