Meaning of mǎn zuǐ:
mǎn zuǐ
满嘴
Noun
a full mouth of (sth physical)
Tā chī de hěn kuài, suǒyǐ mǎn zuǐ dōu shì shíwù.
他吃得很快，所以满嘴都是食物。
He ate very quickly, so his mouth was full of food.
Verb
to have the mouth exclusively filled with (a certain language, lies, promises etc)
Tā shuō huà mǎn zuǐ huǎngyán, zhēn bù kě xìn.
他说话满嘴谎言，真不可信。
He speaks with his mouth full of lies, truly untrustworthy.
