The answer to 'why is my toilet overflowing' is that there is a clog or blockage in the toilet or drain line. This can be caused by a buildup of debris, flushing too much at once, or a problem with the toilet's internal mechanisms.
Some common symptoms of an overflowing toilet include the water rising in the bowl, water spilling onto the floor, and a gurgling or bubbling sound. If the toilet is overflowing, it's important to act quickly to prevent water damage and potential health hazards.