Jennifer Aniston and Reese Witherspoons 25-year friendship has reached a new level.The longtime Hollywood friends answered personal questions about one another, and what was meant to be a playful game quickly turned into a moment of revelation.Witherspoon, 49, asked Aniston, 56, a "tricky" question on LADbibles rapid-fire quiz, "Do You Even Know Me?"REESE WITHERSPOON FLAUNTS SUMMER ROMANCE WITH HER MAN DURING SUN-SOAKED GETAWAYThe "Legally Blonde" star challenged Aniston to guess her "real middle name," offering up three options: Jane, Jeanne or Joan.The "Friends" star guessed "Jane," but she was quickly corrected by Witherspoon, who explained, "Its Jeanne."Things took a turn when Witherspoon dropped a bombshell on Aniston her first name isnt "Reese.""Thats confusing. Im Laura Jeanne," she said.LIKE WHAT YOURE READING? CLICK HERE FOR MORE ENTERTAINMENT NEWS"Laura Jeanne?" Aniston asked, as she blinked in disbelief."Thats my real name, yeah," Witherspoon confirmed.As the two long-time friends laughed together, Aniston remained stunned.JENNIFER ANISTON SHARES THE SURPRISING SECRET THAT KEEPS HER LOOKING YOUTHFUL AT 56"Whos Laura? What? Who the hells Laura? Wait, Laura Jeanne, like Im not calling you that from now on," she exclaimed.Witherspoon adopted "Reese" her mothers maiden name before launching her career in 1991 in the film "The Man in the Moon." She also confirmed "Reese" is technically her middle name."Oh, like Norma Jeanne?" Aniston asked, referencing Marilyn Monroes birth name, Norma Jeane Mortenson."Yeah," Witherspoon replied. "Like Laura Jeanne Reese."And the revelations didnt stop there.CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTERWitherspoon fired back with, "I dont know your middle name.""Joanna," Aniston said."What?!" Witherspoon said as she sat back in her chair in shock. "I was today years old when I learned that," she admitted."Does anybody call you J.J.?" she asked. Aniston responded, "No.""Well, I do now," Witherspoon joked, as she sealed her new nickname for the "Friends" icon.The Hollywood stars friendship dates back to 2000 when the "Big Little Lies" star landed a guest role on "Friends."At the time, Aniston played the beloved Rachel Green. Witherspoon joined the cast for two episodes as Rachels younger sister, Jill Green.