It was a wild idea, but I had to ask the question, anyway.

The sight of the dog put a wild idea into his head.

She had the wild idea he meant to kiss her.

When they came to me a few weeks ago with this wild idea, I took it seriously.

Any wild idea was worth throwing on the table now.

"What put such a perfectly wild idea into your head?"

He had a passing wild idea, but I got him to see reason.

Heaven knows they come up with some wild ideas at times.

At the time he had known that it was a wild idea.

"You're wrong- I can't imagine how you got such a wild idea," since that felt like the only possible thing to do.