ǔ-lâng有人

to have someone there

to have someone there; to be occupied; to be manned; occupied (used to communicate that a toilet is unavailable)

interjection

English Wiktionary, “有人” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%9C%89%E4%BA%BA · confidence: Medium (Wiktionary, Hokkien)