What do tears of joy and the desire to pinch a baby's cheek have to do with one another? Quite a lot. In this episode of Stuff to Blow Your Mind, find out about dimorphous expressions, as well as the siren call of baby scents that lure the joyful aunt to its cheek in the first place.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com
See omnystudio.com/listener for privacy information.