BTS surprise unsuspecting fans from the set of 'Friends' at Warner Bros. Studio

For a segment on 'The Ellen DeGeneres Show', BTS was invited to the Warner Bros. studio set of 'Friends', a huge 90's NBC sitcom series that's still loved to today. Prior to the show, RM, especially voiced how big of a fan he is of the series and learned to speak English through the TV show - eventually giving the entire group 'Friends' merchandise last year.

Well, this time around, BTS got to visit the real set of the sitcom to surprise their fans as a surprise. The producers started by letting fans do some run-throughs of lines and eventually revealed the poster that reads, "It's BTS!!", giving the members of BTS a sign to pop out to greet their fans.

Check out the full video above!