He covered a long yawn; shook his head.

"I have to get to bed," Crystal said before giving a long yawn.

In the light from the lamp the child blinked his weary eyes, his question muffled by a long noisy yawn.

The Houston Chronicle called it "one long yawn."

A smaller groan sounded, more like a long yawn.

He sat up, then stretched with a long lazy yawn that stopped abruptly.

O'Brien stifled a long yawn, took another sip of his coffee, and went back to his work.

Then, he took a good, long yawn and stretch-and scratched himself here and there.

I answer with an impossibly long yawn.

She was, however, performing the longest sustained yawn Clay had ever seen.