He laughed at the ludicrous suggestion.

What makes these officials' suggestions so ludicrous are the very serious impacts that the ozone hole could already be having on marine life in Antarctica.

Alternatively we could go with your rather ludicrous suggestion about the fibbing.

A moment later, he regained his composure and made a ludicrous suggestion: "Why not just buy a regular recorder?"

I know we could - I take back my ludicrous suggestion about your tender heart.

And laughing at the ludicrous suggestion, he continued, "Or that I fired those shots?"

"She has not raised the issue of asylum with me, not once," he said, describing it as a ludicrous suggestion.

Patrick snorted his contempt at this ludicrous suggestion.

Mr. President, if you will pardon me, that is a ludicrous suggestion.

(Both these are ludicrous suggestions according to everything that has been learned over the past half century about how stars work.)