My wife and I are both the youngest child. Combine that with our own experience as parents and we often satirically talk about how things change as you have more children:

Feeling the Baby Move
First Child: I placed my hand on my wives tummy every chance I could for two months waiting for that first time when I could feel the baby move. Hours upon hours I waited until that magic moment when, I felt this little movement. We called all of our relatives to tell them about the blessed experience.
Second Child: When it first happened, my wife called me at the office. I quickly ran home and felt the baby move. We included the experience in all of our letters to our family.
Third Child: She told me the baby moved. I told her I would check it our during the next commercial break. I missed out because her mother called on the telephone so I went on watching Monday night football. By the end of the third quarter, I finally felt the baby move.
Fourth Child: We were in bed and I was trying to sleep. I turned to her and said "Cant you make your tummy stay still? I'm trying to sleep." When it became clear that the baby would be jumping around for a while, we called the pizza man for a delivery.

The Trip to the Hospital
First Child: Every time we felt the slightest B&H contraction, we rushed to the hospital. I would carry my wife to the car and lay her down in the back seat surrounded by pillows.
Second Child: We timed the contractions. By the time she had three in thirty minutes, we rushed to the hospital. She sat in the front seat, with it leaned back and a pillow behind her head and another at her feet.
Third Child: I came home from the office as soon as she started having regular contractions. When they were five minutes apart and hard, we went to the hospital. I gave her a pillow to hold along the way.
Fourth Child: When she called me at the office and told me that she was having contractions hard and five minutes apart, I told her to drive to t want her bleeding on the carpet.

Pacifier Falls on Floor
First Child: Mother picks it up, runs to the kitchen and disinfects it by boiling in water for ten minutes. Then, after it cools down for ten minutes, she gives it back to the child.
Second Child: Mother picks it up, washes it off in hot water, blows on it to cool it down, and gives it back to the child
Third Child: Mother picks it up, licks it off, and gives it back to the child.
Fourth Child: Dog picks it up and licks it off. Mother gives it back to the child.