Jason yawned, but seemed to be paying attention.
I suppressed a yawn.
They were all so tired that they could do nothing but yawn.
He looked at his watch and yawned.
Yawn a big long yawn.
We yawn when sleepy or bored.
It’s rude to yawn without covering your mouth.
you have been yawning for an hour
don't yawn at the table; he's a real yawn
He couldn't stop yawning!
I keep yawning when I'm tired and all I want is sleep.
I am yawning because I feel sleepy
Most of the students looked bored and yawned throughout the lecture.
Members of the audience started yawning after he had been talking for over an hour.
a yawn is that typical reaction of someone who is bored