勝手だろ

it's up to me, isn't it

→ 勝手だ
phrase Rare #41,911
it's up to me, isn't it Often used defensively or dismissively to assert that a choice is one's own business.
JA: 何を着ようと勝手だろ。
EN: It's up to me what I wear, isn't it?

何を食おうと勝手だろ

I’ll eat whatever I damn well please.

— 雪山の絆 (2023)

勝手だろ

It's none of your business.

— 預言者 (2009)

そんなの俺の勝手だろ

That's my choice, isn't it?

— レザボア・ドッグス (1992)

どこへ行こうと僕の勝手だろ

It's up to me where I go.

— きっと、うまくいく (2009)