Because they very next night they will have to prove you wrong. Never fails. The best way to jinx yourself is to brag about how well your baby sleeps. You know you are sleepy when you are rummaging through the fridge looking for something - anything to drink that lists caffeine as an ingredient.
For the last 3 weeks the kids have been telling me how cute the baby is when he sleeps. You keep saying you think hes cuter when hes awake - those big eyes, staring back at you. Then the baby stops sleeping and suddenly you start thinking the kids were right. He is cute when hes asleep...and you would pay good money to see him asleep again.
Then when you complain the baby doesn't sleep he hears you and figures he'll help you out. He falls asleep and sleeps for hours...In the middle of the day.
Never ever say your baby sleeps well. You are sure to jinx yourself. *yawn*