A housefly has somehow got into my microwave oven, while I was using it....?

Does this mean it will become a giant, radioactive bug? If so, would I have to put a spider in the microwave to make a giant radioactive spider to stop the giant, radioactive housefly from wreaking havoc on humanity. And if so, would I have to create another giant radioactive monster to stop the giant, radioactive spider? This is like something straight out of a Godzilla movie.