get something into your head

Now I was thinking how to get her into my head.

He wasn't about to let them back into his head.

What in the world put such a thing into his head?

He simply did or said whatever came into his head.

He gave the first answer which came into his head.

The words go into your head, but they make no particular sense.

When I came back into my own head, he was on me.

Get her into a car, and head for the city.

It got me a little into her head on the whole thing.

He said the first thing that came into his head.