[Monica opens the door to find Ross and Rachel kissing in the hallway.]
'Monica : Oh, I'm sorry, I seem to have opened the door to the past!... I know what you're trying to do! You're trying to steal my thunder!
Rachel: Oh, no honey -- we weren't trying to steal your thunder, honest. No one was meant to see!
Monica : Right, now I get it. That's why you two were kissing in the secret hallway where nobody ever goes!
'Monica : Oh, I'm sorry, I seem to have opened the door to the past!... I know what you're trying to do! You're trying to steal my thunder!
Rachel: Oh, no honey -- we weren't trying to steal your thunder, honest. No one was meant to see!
Monica : Right, now I get it. That's why you two were kissing in the secret hallway where nobody ever goes!
[Monica opens the door to find Ross and Rachel kissing in the hallway.]
' Monica : Oh, I'm sorry, I seem to have opened the door to the past!... I know what you're trying to do! You're trying to steal my thunder!
Rachel : Oh, no honey -- we weren't trying to steal your thunder, honest. No one was meant to see!
Monica : Right, now I get it. That's why you two were kissing in the secret hallway where nobody ever goes!
http://www.tv-quotes.com/shows/friends/quote_3227.html