呵呵噠 [－－哒]

Jyutping ho1 ho1 daat6
Pinyin hē hē dā

Definitions (Wiktionary)
  1. intj, ironic, neologism, slang
    Synonym of 呵呵 (hēhē, “sound of derisive or perfunctory laughter”).
    (syn.) 呵呵