I am so full. I ate all the cake.
That was so much cake. Why did you eat the cake?
I was bored and I thought why not. But now I have such a stomachache.
Cakes taste so delicious, but it is good only in moderation for your health. If you keep doing this then you will gain 20 lbs which is not worth all that cake. Be more controlled when cake is around.
I will eat tastier cakes to make myself bigger, I want to gain 100 lbs.
That is too much weigh to gain in a short period of time. Plus you will make  yourself sick eating an entire cake all the time. It is no good for your health.