[Marshall finally appears in Lily's room as baby is about to be delivered]
Marshall: In return for him getting me here, I may have promised Barney that our son's middle name will be - wait for it -
Lily: I can't wait. What is the name?
Marshall: The name is Wait For It.
Lily: [screams while pushing] AAGHH....THAT IS THE COOLEST MIDDLE NAME OF ALL TIME!!!
Part II
Marshall: In return for him getting me here, I may have promised Barney that our son's middle name will be - wait for it -
Lily: I can't wait. What is the name?
Marshall: The name is Wait For It.
Lily: [screams while pushing] AAGHH....THAT IS THE COOLEST MIDDLE NAME OF ALL TIME!!!
Part II
[Marshall finally appears in Lily's room as baby is about to be delivered]
Marshall : In return for him getting me here, I may have promised Barney that our son's middle name will be - wait for it -
Lily : I can't wait. What is the name?
Marshall : The name is Wait For It.
Lily : [screams while pushing] AAGHH....THAT IS THE COOLEST MIDDLE NAME OF ALL TIME!!!
Part II
http://www.tv-quotes.com/shows/how-i-met-your-mother/quote_5237.html