muck about

US /mʌk əˈbaʊt/
UK /mʌk əˈbaʊt/
"muck about" picture
1.

lummelen, rommelen

to spend time doing silly or unimportant things

:
Stop mucking about and get your work done.
Stop met lummelen en doe je werk.
The kids were mucking about in the garden.
De kinderen waren aan het rommelen in de tuin.