When life gives you lemons, use them as a natural way to clean your microwave. Measure about 1/2 cup of water into a cup or bowl. Slice a lemon in half and squeeze the juice into the water. Drop the lemon halves into the bowl. Place the bowl in the microwave and nuke on high power for three minutes so the liquid comes to a boil. Let stand for five minutes. Do not open the microwave door; the steam trapped inside will help loosen food gunk. Once the timer buzzes, then you can wipe it down!