耍嘴皮 [－－－]

Jyutping saa2 zeoi2 pei4
Pinyin shuǎ zuǐ pí

Definitions (CC-CEDICT)
  1. to show off with clever talk
  2. big-headed
  3. a smart-ass
Definitions (Wiktionary)
  1. verb, derogatory, verb-object
    to be a smooth talker; to be a slick talker
  2. verb, verb-object
    to be all talk and no action