乐一下

have some fun

→ 乐
phrase Rare #29,337
have some fun A casual expression meaning to enjoy oneself or have a little fun. 一下 softens the expression and suggests doing it briefly or to a small degree.
CH: 周末我们出去乐一下吧。
EN: Let's go have some fun this weekend.

你要乐一下

Want to have some fun?

— 出租车司机 (2017)

让自己乐一下

Cheer yourself up a little.

— 出租车司机 (2017)

我要去开车乐一下

I'm off to go for a fun drive.

— 出租车司机 (2017)

我要乐一下

I want to have a little fun.

— 出租车司机 (2017)