I remember over winter break when stayed up for 24h ( not long for me at all. ) and fasted the entire day. i went to sleep and woke up STARVING. ordered 2 large pies and ate 12 slices and 4 glasses of water. :3
Idk why, but pizza is always better with water. besides coke or other sodas.
But i think I'm able to eat a box, around 18 slices max (never done it before though) but my record is around 6 slices? idk.
I usually only eat pizza when with family or friends.
The most I've eaten ( as far as I can remember ) is around 5-6 slices I think. I stop because either I can't eat anymore, or other people finish the rest.