muck about
US /mʌk əˈbaʊt/
UK /mʌk əˈbaʊt/

1.
bermain-main, bermalas-malasan
to spend time doing silly or unimportant things
:
•
Stop mucking about and get your work done.
Berhenti bermain-main dan selesaikan pekerjaanmu.
•
The kids were mucking about in the garden.
Anak-anak sedang bermain-main di taman.