I Think They Do It On Purpose

Babies sleep
Just long enough for you to think
"I am so good at getting babies to sleep"
"It's so nice that my baby takes naps now"
"Now I will start that big project that requires all my attention"
Then that baby wakes up
Just in time
To humble you
Change your mind
And require all your attention
It is only once you've given up
And started a movie
With your baby asleep in your lap
Or in the bouncer
Which you must not stop bouncing
That your baby will sleep soundly
For hours