How Does this Work????

I laid a wide awake Judson down at 4:40 to get Paul David ready for the baseball game. When I went to check on Judson at 4:55 after Paul David had left, HE WAS ASLEEP! How does that work??? I've been working my tush off all day to get that baby to sleep more than 15 minutes...little stinker! I know he's doing it because my plan was to load him up and go to CVS where I was planning on him taking his nap in the Moby while I shopped! Oh, well, maybe after the next feeding!