When several unwitting Jamba Juice employees went to work recently, they encountered Adele, or rather “Someone Like” Adele. The British superstar, 27, teamed up with Ellen DeGeneres to prank the Jamba Juice employees on the Warner Bros. lot during Thursday’s episode.

Prior to Adele’s arrival, the
employees were warned to treat the chart-topping sensation like any other
customer. But she certainly didn’t act normal. Thanks to DeGeneres’
instructions, Adele began a series of ridiculous requests. 

WATCH: Adele Says She Cried for an
Entire Day After Her Glitchy GRAMMYs Performance

“I’ll take a large, but can I have it in a small cup?” she asked
one confused employee, who then offered her two full small cups that she
refused.

Explaining she’s never been to a Jamba Juice before, Adele talked
about the British equivalent. 

RELATED: Adele Powers Through Glitchy GRAMMYs Performance

“We have something similar in Britain -- Swishy Chug , it’s
called!” she said as DeGeneres laughed. 

After cutting off some wheatgrass from the display and
eating it, asking the cashier to include some amaretto in her smoothie, and
having her assistant brush her hair while she waited, Adele finally broke the
news that they were being pranked.

“I’ll tell Ellen DeGeneres to pay because she’s been telling
me what to say,” Adele said to the shocked employees. She then took the
wheatgrass out of her mouth, exclaiming, “This is disgusting!”

RELATED: Adele Makes a Glorious Return to the GRAMMYs Red
Carpet

In addition to her prank clip, Adele also got candid with
the talk show host about her “embarrassing” GRAMMY Awards sound problems, which
were caused by a microphone falling into the piano. 

“I cried pretty much all day yesterday,” she said of her
reaction to the technical difficulties during her performance of “All I Ask.”
“In fairness, I would have cried if it went really well as well. If it was a
standout performance, I would have cried as well. I always cry! But yeah, I
kept spontaneously bursting into tears yesterday.”