Everyone's saying monkey mind nowadays
“But that which is called ‘mind’ and also ‘sentience’ and also ‘consciousness’ arises as one thing and ceases as another all day and all night. It’s like a monkey moving through the forest. It grabs hold of one branch, lets it go, and grabs another; then it lets that go and grabs yet another. In the same way, that which is called ‘mind’ and also ‘sentience’ and also ‘consciousness’ arises as one thing and ceases as another all day and all night.” – Assutavā Sutta. Linked Discourses: A Plain Translation of the Saṁyutta Nikāya by Bhikkhu Sujato.