Yawning is contagious.
Yes, it is a lawyers' answer. It depends.
I had caught an article on the BBC earlier, and was amused by it so I decided to test it out. You see, yawning doesn't mean you're bored, it means your oxygen levels in the brain are low so you open your gaping maw to take in more air and show off your molars.
It has been said that you shouldn't yawn in public because it's contagious, but that's not the entire story. If you're in a group, it turns out those who are closest to you emotionally will be more likely to yawn and those who don't know you would not.
So find your dog and yawn at her. I can usually get mine to yawn back.
Your partner? They're not boring you, they may yawn back.
If you love me you'll yawn at me.
We're onto something here. Prove to me you love me, yawn back.
Chatting with someone about that date they had last night? Ask them if they think that it will pass the Yawn Test. After all, if they won't yawn in your presence, what else won't they do?
Walking down the street and seeing someone you know? Find out just how well they know you. Yes, you guessed it, yawn at them. If they yawn back, it's Best Friend Forever material.
Just don't do it in the middle of a sentence, they may not understand. After all, some people aren't as enlightened as you are.
As Freud Said, Sometimes A Cigar Is Just A Cigar.
Then again, we can now say Sometimes A Yawn Says I Care For You!