They thought they were recording messages of gratitude and support for First Lady Michelle Obama.
Imagine their surprise when FLOTUS stepped out from behind the curtain! And tears, and laughter .. and lots of hugs.
It all happened during an episode of "The Tonight Show With Jimmy Fallon" and you have to see it.
MORE: That time Michelle Obama and Ellen DeGeneres discovered wine in a box
When Michelle Obama came to Georgia to plant a garden with schoolchildren
Please confirm the information below before signing in.