Expensive Envelopes
In this situation, the child received information but not enough context to understand it properly, resulting in a misunderstanding. I completely understand why a parent would be angry if their kid decorated an envelope—they could be expensive, and you probably have a limited supply in your home. However, they aren’t that costly.
The thing that always sticks in my head is if you eat too quickly, you’ll get fat. Not if you consume too many calories; I believe the only factor in whether or not someone gains weight is how fast they eat. Obviously, this made me eat slowly all the time, which isn’t automatically a bad thing.