no laughing matter

But its mission is no laughing matter.

"Mocking a disability is no laughing matter," she wrote on X.

The incident Sunday was no laughing matter to the Dolphins.

To Democrats, including California Gov. Gavin Newsom, the incident was no laughing matter, fueling calls for more regulation to combat AI-generated videos with political messages and a fresh debate over the appropriate role for government in trying to contain emerging technology.

The Epilepsy Society charity wrote on X: "Seizures are no laughing matter for people with #epilepsy @catdeeley. Please do better and educate yourselves about this difficult and poorly understood condition, @thismorning."