First of all, we need to make it clear that this scenario is not possible, because the difference in size between the balloon and the toilet bowl is too great to be done by pulling the balloon into the toilet. However, we can still discuss what to do if this scenario does happen.
First of all, we need to stop the balloon from inflating first to prevent the balloon from continuing to inflate and cause more serious problems. Then, we need to use tools to remove the balloon from the toilet. If the toilet is shallow, we can take it out directly by hand;If it is deep, you need to use pliers or other tools to remove it. If the balloon has entered the drain, we need to use a pipe cleaning tool to clean it and remove it.
However, if the balloon is not an ordinary balloon, but a balloon filled with hydrogen or other harmful gases, we should immediately take more stringent measures. Because hydrogen is a very flammable and explosive gas, safety measures such as opening vents, stopping open flames, etc., need to be used quickly. If it is a balloon with other harmful gases, we need to quickly cut off the connection between the balloon and the outside air and seal the toilet bowl so that the harmful gases do not enter the room.
In conclusion, in any situation, we need to respond calmly and take sensible steps to deal with this unexpected situation. When we encounter such a situation, we should first think about our own safety and then take appropriate measures to deal with it.