se foutre de

slang vulgar

（下品な俗語）（何かを）気にしない / （下品な俗語）（誰かを）馬鹿にする、誰かをからかう

English Meaning

(vulgar slang) Not to give a damn about (something) / (vulgar slang) to take the piss out of (someone), to make fun of someone

Il aime se foutre de l'opinion des autres et agir à sa façon.

彼は他人の意見をまったく気にせず、自分のやり方で生きるのが好きだ。

He likes to not give a damn about what others think and to live his life his own way.