Refers to engaging in non-productive activities intentionally for leisure. They were just messing around with their skateboards in the park.
Pro Tip 2/3
Casual Activity
Indicates a relaxed or non-serious approach to an activity that might not lead to a significant outcome. I've been messing around with some coding tutorials online, nothing serious.
Pro Tip 3/3
Playful Context
Often used when the activity is fun and shows a playful or light-hearted attitude. The kids were messing around with the water balloons at the party.