I dont know....maybe Im just getting old. "Hell, im only 41". Got off work last night and was starving from not eating lunch so I stop and pick up a frozen pizza, "wanted something quick" come home, turn the oven on and slide it in. 20 min later...Ohh...mmmm.... it looks so good, the cheeze was a nice golden brown. Take it out , shut the oven off, get the pizza cutter and start cutting into slices...then I start to wonder.....humm.......why is it so hard to cut??? DAMMIT !!!!!!!........, I forgot to remove the cardboard from under it. Needless to say... I didnt have pizza last night.