This quote is actually pretty funny. There are two element that you need to appreciate. The first is the relationship between a mother and her son. It is basically underlining the hard work, love, and sacrifice of the mother to raise her son. In essence, it takes the life of the mother to mold her son to become a man. She sees him go through many things and her job is done when he becomes a man. All seems good so far.
The second relationship that is mentioned is the what happens when the son meet a woman. It shows how quickly a son can turn from his mother in view of the woman he falls in love with. There is also a hint that the son will fall in love with the wrong type of woman that leads him astray and all of this can happen in twenty minutes!