What's the most pizza you've ever eaten in one sitting!

I just ate half a pizza without noticing. My dad bought like 3 pizzas because some of my cousins are here still so its my parents, me, my brother (who eats a lot like 4 pizza slices normally) and 4 cousins.

And I didnt even notice as I ate half a pizza.

Im less than 100 pounds so everyone was confused