straight face

More cool than what I have seen on TV because sometimes you see straight face and stuff so I thought he was cold... someone who doesn't talk a lot.

The weirdest ones earned him a recurring guest gig on “Late Night with David Letterman,” where he’d swear with a straight face that every story was true.

Played with a straight face, “Weapons” could ignite major, necessary conversations about the fear parents have of sending their children to school and the long-term ramifications of unfathomable violence.

Paltrow keeps a straight face while gently steering the narrative back to Astronomer’s actual product: data pipeline orchestration.

"I think looseheads around the globe are quite weird people," he said, again with a straight face.