Not so much a stupid thing but more of a smart thing. I keep reading about all of these people who eat (or are in the process of eating) chickens - grown adults - who have apparently never made an association with the meat referred to as "chicken" and the birds - only to respond in abject horror.
My little boy (3 years old) saw me cutting up a whole chicken into pieces a couple of weeks ago and asked me what it was. I said that it was a dead chicken. What followed was a very matter-of-fact conversation about how this was a dead chicken. Yes, it's like our chickens. Yes, we will eat our chickens someday. No, not soon. Yes, I promise not to eat them soon.
Ever since, every time we have chicken for dinner, he points at it and says, "This is a dead chicken. It is like ours, but it isn't ours. Ours are still alive." I was so proud of him for handling his first revelation that we eat animals (and may eat our own animals) with such ease and acceptance. My kid definitely won't be one of those "WHAAAT? THIS IS THAT KIND OF CHICKEN??" people.
He still has a hard time believing that we eat cows, however. He says that cows are too fast and would run away if you were trying to kill them. We're gong to have to work on this.