Scream Queens star Keke Palmer decided to surprise people who were waiting at a train station by performing a festive flash mob right in the middle of them. Palmer brought in a boom box and pressed play before diving into some hip-hop choreography to "Joy to the World." As she continued, more and more dancers began to join her until, eventually, a whole crew danced to the beat bringing smiles to everyone's faces. As the flash mob came to an end, the group invited a bunch of little kids to come dance with them, giving them gifts to take home in the spirit of the holidays.