嚶嚶怪 [嘤嘤－]

Jyutping 嚶 嚶 gwaai3
Pinyin yīng yīng guài

Definitions (Wiktionary)
  1. noun, derogatory, neologism, slang
    one who likes to act cute, act spoilt, and loves to use the crying onomatopoeia 嚶嚶／嘤嘤 (yīngyīng)