The Dance Club Mirror was a skit performed on Japanese show Kasou Taishou that shocked audience members in its final moments.
This perfectly choreographed dance routine appears to feature five dancers showing off their moves in a mirror. The skit begins with one girl strecthing until she is slowly joined by her dance team. Once they are all assembled, they perform a dance in a"mirror” that would be complex by itself. When the routine ends, the people in the mirror walk out into the stage to reveal that in fact, there were ten dancers the whole time. Each dancer had an exact replica dressed in the same clothing and doing the mirror images of the dancer.
The Dance Club Mirror must have taken hours and hours of practice to create such an in-sync illusion.