…that their child looks different, so she decides to do a DNA test.
She finds out that the child is actually from completely different parents.
Wife: Honey, I have something very serious to tell you
Husband: What’s up?
Wife: According to DNA test results, this is not our child.
Husband: Well don’t you remember? When we were leaving the hospital, we noticed that our baby had a wet diapers and you said, “Honey, go change the baby, I’ll wait for you here.”