fortuitous discovery

I just found this out on accident last night, and have since tried it a bunch of times, especially when Jack is all excited and crazy and I need to calm him down....

If I rub him behind his ears, in kind of circular motion around the whole ear, he gets all quiet, and then he yawns! EVERY TIME! It is super cute, and after I rub them for a while, he lays down and is quiet... I wonder if it's just Jack, or if your babies do this too --

Try it!