Grammy-performer Adele had some fun with Jamba Juice employees, with the help of veteran prankster Ellen Degeneres. Everything Adele said and did was directed by Ellen via ear piece. Ellen has done this bit with other celebrities on her show, and Adele is always up for helping out with a good prank on TV. The unsuspecting Jamba Juice employees were good sports about what seemed like a crazed, demanding Adele:

And now a few (extremely patient) Jamba Juice employees have a great story for the rest of their lives.

Sources: The Ellen DeGeneres Show