人來瘋 [－来疯]

Jyutping jan4 loi4 fung1
Pinyin rén lái fēng

Definitions (CC-CEDICT)
  1. to get hyped up in front of an audience
  2. (of children) to play up in front of guests
Definitions (Wiktionary)
  1. verb, idiomatic, of a child
    to act up when there are guests present; to be peevish or loud in the presence of visitors
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）