A sit in - When you’re thinking about something so hard, it’s like you’

When you’re thinking about something so hard, it’s like you’re playing a sport in your head. It’s like the brain version of a football game.

I was doing a sit in while thinking about my math homework. It was like a brain war.

My friend was doing a sit in while thinking about the best pizza in the world. He was like, ‘I’m going to win.’

I did a sit in while thinking about my future. I was like, ‘I’m going to be a king.’