http://www.youtube.com/watch?v=gfCBFhB_RQs
Once he said, the son he has with Yoko is a real son (well planned, expected, and Yoko almost lost her life on the delivery, 九死一生, because the doctor had injected a Wrong type of Blood in her), while the early one, as made by many other western men in popular culture, is also a "Saturday Night Life" type of child.
It's as if, on Saturday night, go to a bar, then invite a lady, bring her home, 沒孩子拉倒, 有孩子算數
John Lennon - Woman
http://www.youtube.com/watch?v=PaLfDnShEn0
This one is even more about Yoko, if "Oh, my love" has melt more cultural touch (especially environmetal feelings) into it at the same time
