The first time I saw security questions start becoming a thing in the late 90s, I’d been online for about 5 years and had gone from a kid with decent tech skills to a skeptical teenager with decent tech skills. When I started seeing all these questions to answer while signing up for an account it set off the warning bells, so however many accounts I set up at the time have completely unguessable recovery answers.
Although one time I think I did guess my forgotten answer to “who was you first kiss?” as “your mom told me not to tell”.