Well, I've forgotten to eat on multiple occasions. My favourite one being that one time in college, when I'd been deadline-crunching on one of several comics for school, when I looked up from my drawing, wondering why on EARTH everything I drew turned out so badly - only to realise that it was 1 AM, and that I hadn't eaten since breakfast.
I ate scrambled eggs straight out of the pan, too hungry to bother with a plate.
See also: not sleeping, not going outside for days, still wearing pjs at 10 PM.