I often drink in excess of one quart of green smoothies.
Or 1 quart of nut milk.
I have eaten a pound of raw beef in the past, with raw onion and lemon juice. Was quite good. And I wasn't full after that, either. I think I was 14.
I eat a lot

.
And I can't seem to put on any weight. I still weigh 118, as I have since I was 14 (now I'm 17). Still working on that one.