Think about it. We spend the first year of life saying things like "look at the doggy...fishy...meow meow...moo cow". It isn't an effing "meow meow". That is the sound a cat makes, but we insist on using these terms. But you'd better believe that as soon as the little one starts speaking we are all up in their shit correcting them; "It isn't a fishy, it is a fish." I'm sure at that point they are looking at us, thinking; "I know that, douche bag. I only said it like that because you insisted on calling it that!"
The hubby loves playing with the 6-month-old; tickling her, or tapping his finger over her mouth so that she makes that sound we used to make when we would run around playing cowboys and Indians as kids. He is convinced she likes it, me, not so much. She inevitably starts complaining and fussing. I know what's going through her head. "Quit fucking tickling me! How would you like it if I sat here smacking your mouth so that you would make 'cute' noises? Knock it off! I'm not your goddamn play toy!"
I'm convinced that babies think we are all complete idiots. I mean, whats to say they can't understand everything we say right from birth? That baby from 'Look Who's Talking' could. You know that commercial, I think it is for V8, where the mom is all "Mommy's eating french fries, yes she iiiiissssss" and the baby smacks her on the forehead? The kid isn't doing it because she's eating fries. The kid is doing that because of the way his mom is talking to him. "Dumb-ass...talk like a normal person!"
I think we are all sadly mistaken in assuming that infants don't understand what we are talking about. I don't think we give them nearly enough credit. Just because they can't verbalize it yet, doesn't mean they don't know what we're saying. I can be known to cuss like a sailor. Especially if I stub my toe, or if the dog barks and wakes up the baby. I know by infant cusses like a sailor too. I'm pretty sure the her first words are going to be "Goddamn it Dixie! Fucking dog!"