The high school I attended had 2,000 students-I was pleased/relieved when I figured out (from watching others) that one could spend that time in hallway, leaning up against lockers, instead (I've never eaten a "school lunch", not even in elementary school-yucky stuff).
In college, the cafeteria was gigantic: a two-sided, three-tiered hierarchy from hell. Trying to decide where to sit drove me bonkers, as if I wasn't already experiencing massive anxiety just being there. Often I'd skip meals (though they'd been paid for with the mandatory 'meal plan' for dorm residents), in part because I didn't like most of the food & my sleep times didn't overlap well with serving hours-but also because the social milieu was unbearably intimidating. Meals (food eaten in presence of other people)=anxiety & fear, for me. People would make snarky comments about what & how I ate, too-even though I didn't talk smack about their (disgusting, to my senses) food choices.
I don't work & don't go to restaurants-I minimize any potential occasions where I might have to eat with people. Family mealtimes (when I was a kid) were constant battle & I still haven't forgiven my parents for being such jerks about my reactions to their food (which they'd try to coerce me into consuming). Thank goodness my boyfriend (who happens to be a very foodie sort of person-he's a chef) accepts how I am & doesn't give me grief about my unusual ways !
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*"I don't know what it is, but I know what it isn't."*