do me a favour

Phrase

literally UK idiomatic

(literally) Used to ask someone for a favour (may be polite or sarcastic). / (UK, idiomatic) Expressing incredulity.

Japanese Meaning

（文字通りの意味）誰かに頼みごとを頼む表現。礼儀正しくもあり、場合によっては皮肉を含む / （英国のイディオム）驚きや信じられなさを表現する言い回し

Could you do me a favour and water my plants while I'm away?

ちょっとお願いがあるんですが、私が留守の間に植物に水をやってくれますか？

Sense（1）

(literally) Used to ask someone for a favour (may be polite or sarcastic).

Could you possibly do me a favour and pass me that newspaper?

Sense（2）

(UK, idiomatic) Expressing incredulity.

You expect me to clean up all this mess for you? Do me a favour.