Joony teases the trio's while watching their performance on the rooftop.  Suggesting they should try to be more like the famed street dancer, Chinu 
Dance lesson.
‫درس رقص.
Tanzunterriiicht!
¡Clases de baile!
¡Clases de baile!
Des cours de danse !
Lezioni di ballo...
Aula de dança...
Проведи урок!