chia̍h-bô-chîⁿ-pn̄g食無錢飯

to be imprisoned

euphemistic

English Wiktionary, “食無錢飯” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%A3%9F%E7%84%A1%E9%8C%A2%E9%A3%AF · confidence: Medium (Wiktionary)