She gave a yawnless performance.

The lecture was so yawnsome that I struggled to stay awake.

She yawnily stretched her arms and got out of bed.

The movie was so yawnable, I fell asleep halfway through.

The conference was a yawnathon, with dull presentations and no interesting discussions.

Yawnathons are events where people gather to see who can yawn the longest.

I saw a group of yawnups at the park.

She yawnfully stretched her arms and legs after waking up.