Based on personal experience.
"She can get moody."
"No take backs!" and then giggle at the wedding reception.
"Oh your wife had the same problem as a kid ..." (in reference to your child's habit for chronically wearing their clothes inside out and backwards) "In fact some times she would forget clothes! I remember when she forgot to wear underwear on her way to the bus stop for Kindergarten! Did I tell you that one? I love that one!"
"Don't buy her diamond earrings. She'll just loose them."
"Why don't you want to have anymore babies?"