How is “muck about” used?

In The Selfish Giant (2013), one line is: “- Hurry up and stop mucking about.”

Which movie is “muck about” from?

The clip at the top of this page is from The Selfish Giant (2013).

- Hurry up and stop mucking about.

5 作品で登場 · 1 本目

to behave in a silly way, especially when you should be working or doing sth else

くだけた · イギリス英語 · 4 本の映画に登場

オックスフォード映画の 100%
to behave in a silly way, especially when you should be working or doing sth else
Don't muck about with it, for Christ sake. You've been pulling that bleeding knob.

定義：Oxford Advanced Learner's Dictionary 第 9 版