[roll] around in {one's} (mind|head)
1
to be thought about by someone without much coherence
- Various ideas and possibilities roll around in my mind when I'm brainstorming.
- The question of what to do next rolled around in her head, causing confusion.
- Different options for vacation destinations rolled around in their minds as they planned their trip.
- Worries and concerns about the future often roll around in my mind at night.
- Random thoughts and memories roll around in his head as he tries to fall asleep.