that is why I stated that there may be more going on. It is called Prader-Willi Syndrome.
http://www.pwsausa.org/
There is a medical condition that can make kids such compulsive eaters that they even will go into the fridge and eat an entire jar of mayonnaise. I was thinking that the desperation your child is displaying sounds more like he is compulsive about eating and not just throwing a tantrum because he wants more tater tots. That is why I recommended a doctor. I am sorry but can't remember what the condition is, possibly its thyroid related, but in any case what you are describing really sounds like it needs some medical investigation.
Good luck, please don't wait, investigate this with the pediatrician and/or any specialist he recommends.
Do you mean when you dont give him more food what kind of food is he being fed ,?
Well, some children tantrum to get their way and if it works...they continue it. However, there may be more going on. I think you should see your doctor as Annie said. Make a list of foods that he eats for about 5 days. Take that with you to talk with the doctor.