When I was young, there was a kid next door whose mother would send him out every Saturday morning to our house. She would arm him with a portable breakfast of a peanut-butter and mayonnaise sandwich. Sometimes he used to take the two slices of bread apart and lick the mayonnaise off. I never said anything -- not wanting to hurt his feelings -- but I found it disgusting.
Some years later when I was living on my own -- I hated cooking because I was a horrible cook. So, I used to make simple and fast meals. I would make up tuna fish (with green onions, pickles, etc.) Then I would heat flour tortillas with cheddar or jack cheese. After the cheese had melted and the tortillas were soft and pliable, I'd slather on the tuna fish mixture and throw in some sliced avocado. And roll it up. I loved it. A JW brother from a Mexican family saw me eating it one day and went crazy! "That's disgusting! You can't put fish in a taco! That's sacrilege!" Well, today, many years later, they have fish tacos available commercially.