I'm sorry this happened to you. It's very frightening. I learned the hard way that one of our children this year "stuffs" as well. His mom neglected to tell me that he can only have one or two pieces at a time.

His twin sister does the same, but she hasn't tried it with us. So now we have to watch those two like a hawk. Besides them, we have one will multiple allergies who likes to snatch food from other children, and then the normal two year olds who are up and down from the snack table because they have the attention span of a flea. (I say this with great love and a sense of humor...)
I respect the viewpoints of many of the posters on this thread, but I think it is safe to say that they have no idea what it is like to be in charge of 12 or 21 or however many children, all of the same age, but with varying levels of ability.