hiàn-thiú獻醜

to show oneself up

to show oneself up; to show one's incompetence or inadequacy (speaking of one's performances)

English Wiktionary, “獻醜” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%8D%BB%E9%86%9C · confidence: Medium (Wiktionary, Hokkien)