I eat one meal a day for as far as I can remember. Fatties love to tell me it's unhealthy, my doctor hasn't figure out yet though so I imagine it really isn't that unhealthy.

Eating three meals a day is a very very very recent thing if you account for human history, or even modern human history

You need to include more info about your one meal, height and your actual weight. If your 5'2 this is alot less interesting

180cm, 75kg, leanish, I optimise for rock climbing and do kettlebell workouts 2 to 3 times a week. I do close to the bare minimum of what is available to stay in decent shape, it takes me less than 4 hours a week total. Not counting the time I save cooking/eating

mhm! i do pretty well portioned 3 meals. small breakfast, small lunch, average sized dinner. i really like just grazing all day, eat a cracker or two, have a yogurt, have some chips etc. id honestly say im snacking a good bit whenever i feel like it. but exactly, portion and contents. im a pretty lean 150lbs

Yes but US portions are anything but small

Okay, you are correct but not realistic. 3 realistic meals in USA and Western Europe then. Cofee/toast or cereal/musli for breakfast, bought lunch

Yea I can down a familiy pizza if its all I eat for the day.

Also, the rise of zero/light drinks have actually helped.