Playing with the umbilical cord: The fetus will never be quiet for a moment except when sleeping. The expectant mother does not give him any toys in the womb, and he spends his free time amusing himself. But there is one toy that I have to mention, and that is the umbilical cord. It was originally a \”channel\” to deliver nutrients to the fetus, but it was so boring that the fetus regarded it as a toy and circled around the umbilical cord.