Feng Shui experts are divided on this. Some Feng Shui consultants like Lillian Too believes that this is true. I’m not sure what is her explanation. As for me, I believe that this is a myth, most probably started when older woman gets uncomfortable when they see their grandsons or granddaughters hiding under their mom’s skirt. Most likely, this is simply uttered out due to the uncomfortable and unpleasant sight of a child hiding under their mom’s skirt. Remember, back in those days, Chinese are pretty conservative.