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

1.
membuang masa, bermain-main
to spend time doing silly or unimportant things
:
•
Stop mucking about and get your work done.
Berhenti membuang masa dan selesaikan kerja anda.
•
The kids were mucking about in the garden.
Kanak-kanak itu bermain-main di taman.