uē-thâu話頭

starting portion of one's speech

starting portion of one's speech; thread of discourse; subject under discussion; subject for others to gossip about, ridicule, etc.

English Wiktionary, “話頭” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E8%A9%B1%E9%A0%AD · confidence: Medium (Wiktionary, Hokkien)