He would have to sleep on it, because his old brain was running on empty.

After being separated from the gorilla, the brain forms legs and runs away.

Karr asked, feeling as though his brain was running at half-speed.

He looked at the two of them and tried to think, but his brain was running in frantic circles.

Which is to say he isn't the kind whose brain can't run if his jeans get hot.

His brain had gone berserk and was running faster than the car!

But for once my brain ran faster than my tongue.

And if we do visit the Clump, his brain ran on, we'll need guides.

Through Harry's brain was running the solution of strange events.

If my brain had been running on more than one cylinder.