gōng-mah-mah戇嗎嗎

very foolish

very foolish; very stupid

ideophonic

English Wiktionary, “戇嗎嗎” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%88%87%E5%97%8E%E5%97%8E · confidence: Medium (Wiktionary)