So, say your 3-year-old is kind enough to sleep nice and late one morning so you get some peaceful, relaxing quiet time all to yourself. And let's just imagine that your 9-year-old also sleeps late. Then, hypothetically speaking, you write about said children sleeping late and how absolutely divine it is and everyone is jealous and they tell you how lucky you are.
Well, don't get too excited, because you may have just jinxed yourself and that night the 3-year-old might just decide to cry ALL NIGHT LONG and then wake up at 5 a.m. ready and raring to go, and you might cry because you are so tired and kick yourself for bragging about how your kids were sleeping late because now the sleep gods are totally FUCKING WITH YOU.
Hypothetically speaking, of course.