Then you got some insane idea about creating an independent city of your own.

She got the insane idea to scoop up some of his come into her mouth.

Stop the insane idea that absolutely everyone should go to university.

If you feel an insane idea strongly enough, you've usually got something.

As he considered this insane idea, the ship started to rumble.

They could see that he was genuinely moved and excited by his insane idea.

There was some insane idea at the back of his mind.

"Maybe he'll give up this insane idea and come home."

"Physically, it's an insane idea to put 22 sound artists together in a small space."