Friends [Season 2, Episode 2]

Oh, I'm sorry. Did my back hurt your knife?

— Carol? I was wondering if Joey could ask you a question about breast-feeding?
— Sure.
— Uh... Does it hurt?
— It did at first, but not anymore.
— So, uh, how often can you do it?
— As much as he needs.
— Oh, okay, I got one, I got one. Uh... If he blows into one, does the other one get bigger?