Happy tears were always difficult for me to understand when I was a kid. How could you be happy, yet bed sad? This kid (10-month-old baby) grasps the concept as she cries happy tears as her mom belts out a beautiful song.

The Huffingtonpost says,

The little one was identified by Canada's TVA as Mary Lynne Leroux. Mom, Amanda, told TVA that she's too shy to sing in public -- but clearly, she's found an appreciative audience at home.