Watch Jennifer Aniston hilariously surprise 'Friends' fans visiting the iconic coffee shop on set

Morgan Hines, USA TODAY

Plenty of "Friends" fans visit the show's Central Perk cafe at the Warner Brothers lot during studio tours and pose for a photo on the plushy couch where the beloved friends spent so much of their time.

But how many people are actually served coffee by Rachel, a.k.a. Jennifer Aniston, in her former place of employment?

Fresh off her Screen Actors Guild Award win for her role in "The Morning Show," Aniston hosted "The Ellen Show" and decided to have some fun with unsuspecting "Friends" fans who were touring the Warner Brothers studio, where "Ellen" is also filmed. (She was filling in for Ellen DeGeneres, who was absent for an appointment at the DMV, Aniston said.) 

Jennifer Aniston accepts the award for outstanding performance by a female actor in a drama series for her role as Alex Levy in “The Morning Show” during the 26th Annual Screen Actors Guild Awards.

In the clip shared, a cameraman can be seen asking a group of women about their favorite character on "Friends" as they sat on the infamous couch. 

Ross was the answer, which wasn't an acceptable answer for Aniston, who was hiding.

"Ross?!" She exclaimed as she popped up behind the couch. "Who said 'Ross'?"

The reactions alone are worth watching the clip repeatedly as fans shriek with excitement realizing that Rachel had made an appearance. She even serves "coffee" to one of the tour groups. 

One guest asked if it was really her: "Is there a mask on?"

Nope, it was actually Aniston messing around with those lucky enough to have a seat on the couch that day.

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This article originally appeared on USA TODAY: Jennifer Aniston surprises 'Friends' fans while hosting 'Ellen Show'