Nappity Naps

So Nixon has reached that point where he climbs out of his crib and there is no way he can be put down for naps.  He usually makes it until about 3:00, when I'm picking up the twins from school, then he falls asleep in the car.  Luckily, he transports easily. So what is the problem with this??  He stays up FOREVER at night and usually ends up in the girls' room driving them crazy (or making them laugh).  I must admit though, I kind of enjoy holding my sleeping baby boy in my arms.  My heart melts a little bit every time.