A friend of mine brought a McDonald's Blitz box to a Chiefs party last year... and ate the whole thing himself. That is two Quarter Pounders with cheese, 10 Chicken McNuggets and two medium fries. It was gross and I can't imagine it being even warm by the time he finished it all. He was even more excited that he got a Chiefs window flag with the box.
EDIT: I just looked it up and it's 2,940 calories.