問候你老母 [问－－－－]

Jyutping man6 hau6 nei5 lou5 mou2
Pinyin wèn4hou nǐ lǎo mǔ

Definitions (CC-CANTO)

euphemism for 屌你老母, 'fuck your mother', foul language insulting one's mother when cursing someone [colloquial]