死乞白賴 [－－－赖]

Jyutping sei2 hat1 baak6 laai6
Pinyin sǐ qi bái lài

Definitions (CC-CEDICT)
  1. to pester someone again and again
Definitions (Wiktionary)
  1. phrase, colloquial, idiomatic
    to continuously pester someone; pesteringly; annoyingly