It's Freaky Friday, and it's not even Friday yet. Tina, the "Props" girl of New Directions, hits her head at the mall fountain. After shaking off some water, she becomes Rachel. And she spends her day becoming a prima donna, instead of Glee's wallflower. The others, too, have embodied others. Puck's now Blaine. Finn is now Kurt. Will is now Coach Sue. Coach Sue is now Will. Finn is now Kurt. Santana is Artie. Artie is Santana.