They do expect you to leave the hospital at some point. Oh, and take the baby with you!
Bodily functions are the topic of a ridiculously high percentage of conversations.
Being a parent will expose just how selfish we really are. (Some of us can easily drop it, and some of us need some work to get over it)
Sometimes a baby just needs mom! No offense to the dad's of the world (or Jimmy), but a mom seems to be able to cure all (at least for the first couple months.)
Don't get hung up on milestones. I spent too much time reading articles about when babies should do things. As long as he/she is continuing to learn and develop new skills there is no cause for concern.
No matter how many times your husband says "I will change as many diapers as you need me too" before your little one arrives, he will probably still grumble while doing it sometimes.
Make time with your spouse a priority. It was easy finding time to talk before, but now we have to be more intentional. You need a place to vent and discuss, especially about the new stresses that come with have a babies.
Be prepared for change. Don't try setting a schedule too soon. Babies make their own routines pretty quick. But you also can't rely too heavily on them. As soon as you do they will shake things up!
You don't have to bring the giant diaper bag with you everywhere. You will quickly learn what is necessary. I have a small shoulder bag for trips to the store and shorter outings: a couple diapers, wipes, bottle, change of clothes. This will cover most major disasters (that don't require a 911 call) without having to speed home with a crying baby!
Specifically concerning boys:
Point it down (the penis, that is!) This may be one of the most important things to learn when you are a mom of a boy. The top of a diaper offers little protection against a strong stream of urine. You will find yourself doing a LOT of laundry if you don't learn this one fast!
On that note, when the diaper isn't on...little boys may just pee on themselves every time you change their diapers for the first few weeks. They do eventually get over this, but be prepared for it. I suggest investing in some Pee-Pee TeePee's (because they are fun) or just throw a wipe over it. It won't stop the changing pad from getting wet, but will prevent your little guy from peeing in his mouth (learned that one the hard way!)
The last 2 months have been absolutely incredible. I feel so blessed to be the mom of such an amazing little man. I look forward to continuing to watch him learn and grow.