Learn your portion size

Supersize Sabotage by Gloria McVeigh

What would make you keep eating stale, 2-week-old popcorn? Answer:
having lots of it. That was the surprise finding in one of two new studies at the University of Illinois. Researchers gave 184 moviegoers dried-out popcorn, half in medium tubs (11 cups) and half in large (22 cups). Even those people who complained about the taste ate two-thirds more out of gigantic cartons than out of midsize ones. In a second study of 64 people given soup, half of the soup bowls refilled automatically, but too slowly to be noticed. Those eaters with bottomless bowls slurped 40% more soup (185 extra calories).

Bottom line: Learn what a normal portion looks like, and just eat that much.

Some skinny people can eat all they want, but fortunately they do not want that much.

Your post was definitely NOT off topic. Our mentally ill kibitzer knows not what she writes. In colloquial terms she is coco otherwise know as plain crazy.

my coworker is like this also.