Taylor Swift is famous for dancing like nobody's watching during award shows, and this week, she satisfied a fan's request to define one of her moves. Here's her perfectly on-point response : The Mom-Croon is a dance move invented at the 2014 Grammy Awards. Eyes closed, lost in the music. The way your mom gets taken away by a tune from her high school days, glass of red wine in hand, shuffling around the room as her teenage kids roll their eyes in disdain.