Adele and Ellen DeGeneres might have just pulled off the most epic prank ever! On Thursday's airing of "The Ellen DeGeneres Show," the Grammy-winner and the talk show host joined forces to prank Jamba Juice employees.

Adele visited one of the juice company's outlets with DeGeneres guiding her, feeding her lines through a earpiece as she's treated normally by the store's employees on the request of Adele's fake assistant.

"I'll take a large, but can I have it in a small cup?" the "Hello" singer asks. "Large in a small cup?" the now-confused employee at the cash register repeats, according to Today.

"We have something similar in Britain; we call it Swishy Chug," says Adele, describing the British equivalent of Jamba Juice, according to Entertainment Tonight.

When the time comes for her to pay for her order, Adele empties her purse on the counter. "Where is my money? I need to pay for this, right? I'm a celebrity. Do I have to pay?" she asks the employee, according to People.

The prank has many sidesplitting moments but if we had to choose one, it would have to be when DeGeneres asks Adele to pull out her scissors, cut some wheat grass and chomp on it.

This isn't the first time Adele has participated in a prank. The Grammy-winning singer fooled her impersonators by pretending to be one of them, according to Variety.

Watch Adele and Ellen's Jamba Juice prank below: