Sometimes I have it all written in my head - every single part.

"None of the reviews were as bad as the ones I wrote in my head," she said.

I just write them in my head for the most part.

Standing at the bus stop, I'd be writing in my head.

During the ferryboat journey, I'd be writing in my head.

At lunch hour, I'd be writing in my head.

"He attacked you," Kirk said, writing the report in his head.

It is a subject about which I have been writing in my head for months.

But the man had just jotted off the suicide note like he'd been writing it in his head.

On the way to a show, she wrote the song in her head.