ku-kú-chiáu咕咕鳥

penis

penis (especially of a young boy)

childish

English Wiktionary, “咕咕鳥” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%92%95%E5%92%95%E9%B3%A5 · confidence: Medium (Wiktionary)