Sometimes, I forget that I've lost all touch with reality. I forget that babies are supposed to take multiple-hour naps two or three times a day. When you have a kid that doesn't like to sleep during the daytime, and another kid who likes to make loud noises while the baby's trying to sleep, that can be hard to remember. On the days when my baby does act like a typical 3 month old, I get all nervous.
Like today--he's just been sleeping forever. Is he sick? I checked on him and he's still breathing.
And, suddenly, I'll look at the clock and realize, oh, it's only been an hour and a half. What a nice nap!