One time I bought a bunch of guacamole from the supermarket, and I happily ate a whole container every day. The next time I was at the supermarket, they had stocked even more guacamole than before, despite it being a food with a short expiration date. I happened to be fine on my home guac levels, so I didn't buy any.

But I was having symptoms of my celiac disease and figured out I couldn't eat the chicken OR the taco shells by process of elimination. Then I had nothing to eat the guacamole with while I was cycling through various bland foods on an elimination diet.

By the time I had found a sliced turkey breast that was actually gluten free along with taco shells that were gluten free, the supermarket had completely stopped stocking guacamole in any form, which was hard to believe, since I was in Mexico.

My impression, which is impossible to confirm, is that I broke their computerized ordering system by buying 100% of the stock and then 0% of the stock of a refrigerated food with a short shelf life. When they had to throw it all away while I wasn't eating tacos, their computerized ordering system decided it was now unprofitable to stock at all, so then I couldn't eat guacamole again.

When I told a Mexican friend this, they wondered why I didn't spend hours buying all the fresh ingredients, waiting days until the avocados were ripe but not rotten, and making the guacamole myself...