咂嘴弄唇
      Explanation: Surprised or embarrassed.
      Source: Qing Wu Jingzi "Scholars" second time [the king lifts] eyes saw the imitation of students Xun Mei is the name of the paper, eat feel surprised; a while get the lip smack, face to make as many monsters . "
  • Thesaurus:  smack Tongue Alley