Because semen swims upstream. The bladder is not located above the vagina (internally). If the ejaculation takes place in the vagina, the semen will swim up towards the cervix.
This is hazardous for children, especially younger children, because they are a choking hazard if they put the toy prices in their mouths and choke. What I would say to the parent is to maybe see the age range for the toy and think about if that toy is for children.
Because they are aside from the nervous system, the most important systems in your body. Without these systems you would not be able to circulate nutrients, expel and transport wastes like CO2, And just about keep you alive. In healthcare, you come to know that without a heart beat or an airway, your patient will die.