Well, could have, but the movie hit home on a LOT of things for me, which I guess made it funnier at times.
You can't relate to the barking once the babies are finally sleeping unless you've been through it... about every day lol. And how she was mad at the dog because she was exhausted... yup, been there. Although I'm sure it was in the book too, I just read it before I had kids.
All in all, I liked it though, but it probably helps that I read the book a long time ago and I've forgotten a lot of it.