食咗蒜頭 [－－－头]

Jyutping sik6 zo2 syun3 tau4
Pinyin shí zuo suàn tóu

Definitions (粵典–words.hk)
  1. 語句、俚語
    形容​一個​人​好​大口氣​，​自吹自擂
    a boastful person; literally: to eat garlic

食咗蒜頭 [－－－头]

Jyutping sik6 zo2 syun3 tau4
Pinyin shí zuo suán4tou

Definitions (CC-CANTO)
  1. to be a big mouth; to be boastful [colloquial]