I have consumed large supreme, thick crust pizzas many times, albeit not lately. I am not sure if I could do it now, as my appetite is not what it used to be.
Back in the day, sure. Now I’m 39. If I eat more than three sllices now I feel like I’ve swallowed a barbell.
Yes, I did that when I was younger. I also ate entire loaves of garlic bread in one sitting on a regular basis (they were just the right size to barely fit in our old microwave diagonally).
I think it’s much simpler than that: We’re hardwired to want to eat more than we immediately need, because doing so usually helps an animal survive. In the context of millions upon millions of years of animal evolution, the permanent non-scarcity of food that modern Western humans enjoy is ridiculously rare. The instincts that serve you well in the wild don’t work quite so well when you can reliably eat a full day’s worth of food every day.
And yes, I can eat an entire pizza quite easily. A large Pizza Hut supreme lover’s on a pan crust, for instance. I’ll be most or all of the food I eat that day, but it’s an easy feat.
Maybe a thin medium. But I would regret it deeply. (if you’re talking a whole thing of ice cream now, not the pint size, hells yeah, easy.)
Not only did I polish off an entire 12" pepperoni pizza for dinner but earlier for lunch, I consumed at least two large tacos and two burritos. (There could’ve been more food I ate. I’m not sure.) I lost track of much pop I drank during either meal.
Of course, I was only 15 with a high metabolism from running cross-country when I did this. That’s now probably more calories I’ll consume over a five day period.
Amateur.
I once ate a large pie with everything on it, followed by a half gallon of ice cream. That was back in college. Today, I could down about 25% of that.
As a rule I don’t eat carbs, to keep my blood sugar and blood pressure regulated. But 2-3 times a year I allow myself a few days to cram whatever I’ve been missing into my mouth. Cakesters were invented after I went on my no-carb regimen. I tried them on one of my days off earlier this year and was immediately hooked. They’re like crack! I like both types, peanut butter and Oreo. It’s a good thing I have to quit and go back to no carbs. If I ate without abandon the way I used to, I’d eat 2-3 packages a day, every day. I kinda brightened up to see them mentioned in this thread. In a few months when I allow myself another food holiday, I’m heading straight for the 7-11 for some Cakesters.
A medium pizza is 12". A large is 16". Just in case you ever get that as a Trivia question.
A whole medium pizza, OneMissedPost? Pfft. Waddaya, an amateur? Lilliputian? Valerie Scott in Land of the Giants? 
Yogi Berra was once asked whether he wanted his pizza cut into six slices or eight.
“Cut it in six,” he told the chef. “I don’t think I can finish eight.”
I’m more surprised that there’s people out there that don’t eat a full one by themselves.
Totally agree, amanset.
There’s ‘me’ and ‘I’ in ‘medium’…
A medium thin-crust? Sure. There’s almost nothing there.
A medium “normal” crust pizza, like from Pizza Hut or Dominos or whatever? Not in one sitting. I’ll eat half in one sitting, and were it to sit in front of me all day I’d munch a slice every hour or so and it’d be eaten in a few hours.
If we’re talking Totino’s Party Pizzas (they’re probably about 9-10"), I’ll eat two of those things, though they seem to be continually shrinking every time I buy them.
I could never eat more than 3 slices of pizza at one sitting. But those Smores you can get in the snack isle, maybe little debbie makes them? Those things can not be in my house.
They are my crack. I bet I could eat more than 6 at any one time and still be hungry for more.
Yes, I am ashamed to admit that.
Lord, when I was in my 20s and 30s and very heavily into power lifting and general fitness the concept of having any problem eating a whole pizza was laughable. Me and guys I would lift with would go to a local pizza place about once a week and eat a whole large pizza each with no problem whatsoever, regardless of crust type, toppings etc.
I have actively avoided eating like that for probably more than 10 years, but I would say maybe 3 years ago I was at a birthday party where a lot of pizza was there and I ate about a full pizza’s worth. The passage of time seems to dramatically impact how much you can comfortably eat. Where before I could down a large with no ill effects now it causes my whole body to feel like it is going to erupt from the inside out due to extreme fullness, and all I wanted to do was just lay down for about a day.
In college I used to do that all the time. Didn’t believe it when people told me my metabolism would change in my mid-20’s. Whoops.
I binge so I wouldn’t even have to be hungry. I’ve been known to pick up one of those Little Caesars five dollar pizzas and eat the entire thing.
And then I’d want something sweet.
The rate at which you eat also affects this. Our appetite/ hunger drive is regulated by a pair of hormones called ghrelin and leptin, which induce the perception of hunger and satiety, respectively. However, the kinetics of hormone production and removal are such that your leptin and ghrelin levels can only change so quickly. Thus, if you eat really fast, you can actually outpace your body’s ability to detect your changing level of satiety. In effect, you might fill up your stomach (which creates a certain amount of negative feedback in and of itself, manifested as physical fullness and pain if you’ve overeaten), but your hormones are still saying “I could eat more.”
This is why eating less food over a longer period of time can lead to the same sensation of fullness as eating a larger amount of food in a shorter period of time. It’s also partly why it’s important to chew your food - not only does that aid your digestive processes, but it slows your rate of ingestion. 