呞戌戌 [－－－]

Jyutping 呞 seot1 seot1
Pinyin shī xū xū

Definitions (Wiktionary)
  1. phrase, Zhangzhou-Hokkien, idiomatic
    to speak in each other's ears; to whisper to each other
    (syn.) 交頭接耳, 交头接耳