Even though you have just met and brefriended a werewolf, you can't believe what's in front of you. It's a beautiful gingerbread house, and the fire lit inside (there's smoke coming out of the chimney) gives it that fresh baked aroma.
You know the story, but if it looks good and smells good, it probably tastes good. *I'll just break a bit off to taste and leave* you think - but it's so tasty you break off and eat more and more.
After you have put on a few pounds and inches, an old green-skinned woman comes out to you. "Hey, don't eat my house dearie!" she says "Come inside and you can eat all you want!" Tempted by this offer, you follow her in.
Inside, the witch sits you down at a table where platefuls of cakes, gingerbread and cookies magically appear. "Help yourself!" she says "There's a neverending supply!".
Instantly you start gourging yourself, growing fatter and fatter. As soon as one of the plates is empty, it magically refills. You carry on eating and expanding, getting bigger and fatter until you see the witch stoking up the oven and a sudden realisation hits you so hard you stop eating for a few seconds. Soon you'll be stuffing her!