I have been a NEET ("Not in Education, Employment, or Training", a person who is unemployed and not receiving an education or vocational training) for the past 15 years. I was in university for a few years after graduating high school, failed out, and moved in with my parents with whom I have lived ever since. I have not worked in all this time because frankly I had no desire to, and because my parents enabled me I enjoyed living a relatively comfortable life with no adult responsibilities.
I am now looking for work and need to explain why I have not been employed for so long. I've been aware that my lifestyle could not last forever and I've mentally prepared for this moment, and I'm confident that I'm capable of doing work and holding a job.
I've seen advice to just be honest, but I find it hard to believe my situation could be spun in any positive way. The most I could honestly offer is that I take care of some household responsibilities, like grocery shopping and taking the pets to the vet because my parents are elderly and I've begun doing some things for them. I had a couple work-study jobs in university that I did reliably, but that was so long ago I don't have references for them and frankly I don't think my supervisors would even remember me. I have been capable of hard work in the past, for example I graduated from high school with honors and made the dean's list with a 4.0 in my first semester at university, but I don't have any other noteworthy accomplishments or experience.
I'm obviously not looking for any significant position. I'll happily take a job at McDonald's or Walmart if they'll have me, but I fear my history is so bad even they'll turn me down. I do not have a car so I cannot do Uber or food delivery.
I'm considering just making something up as I've heard gaps aren't as big a deal for entry-level jobs, but I've also heard that lying can come back to bite you.