"It's just sort of these weird clips from things that clearly have nothing to do with 'Friends,'" Kudrow said. "That was about people in their 20s, 30s. The show wasn't about people in their 40s, 50s -- and if we have the same problems then that's just sad."
"No one said it had to be a comedy," O'Brien said while laughing.
It was Kudrow's co-star Courteney Cox who told her the trailer even existed.
"Courteney actually is the one who said, 'Did you see that trailer? Oh, my God. What do we do?'" Kudrow said, telling Conan her reply was simply, "Nothing, that's like a clip. Those are just sort of clips."
The makeshift "Friends the Movie" trailer catches up with Phoebe, Joey, Monica, Rachel, Chandler and Ross years after they've grown up and grown apart. The trailer below "picks up a few years where the final season left off with Ben and Emma grown up. Mike and Phoebe have trouble with marriage, Monica and Chandler are getting a divorce, Joey couldn't find someone, and Ross and Rachel have trouble after many years of not being together. Filled with some surprise appearances by today's actors, along with some old friends (no pun intended), this movie will be an all-star extravaganza, while showing a lesson in being there for each other."