muck around
Intermediate (B1)informal
To play around doing nothing useful, or to mess someone around.
"We spent the afternoon mucking around by the river instead of studying."
Hear it in context

That Listener Mail Episode: “Open Top Bus For SECOND Place!” - Our Most HEATED Games Gone? | EP. 402
That Peter Crouch Podcast · 13:55
Okay, defenders Crouchy let's not muck around.

Apple, you can keep your MacBook Neo.
DankPods · 8:24
get to the kernel and muck around with it.

Random Season 2 Episodes to Watch At Lunch | Brooklyn Nine-Nine
Brooklyn Nine-Nine · 22:14
You cannot muck around in people's private lives.

Brooklyn 99 - Season 2 Episodes 12-17 | Mini Episodes
Brooklyn Nine-Nine · 21:42
You cannot muck around in people's private lives.

Gilt yields hold high as election losses hit U.K.'s Starmer
CNBC International Live · 8:06
that you can't muck around with the markets.