My friend's told me her little brother was solving it by himself, and the whole family was proud. And that he was slowly getting it, but wasn't finished, and it had been 3 weeks. He was 8 years old.
I went to visit them, from college, and her little brother was there. The sister told him to bring the cube to show me, and I looked. 4 out of 6 sides were solved...
I kept looking, and there were stickers that had been obviously moved... 2 opposite side edge colors, on the same cubie...
I told him, in front of his dad, that he would never be able to solve it, and gave him the reason. I said, "I don't think you cheated, but someone in the past moved the stickers, and made it unsolvable."
I told them that the only solution was to redo the stickers, or buy a new one. The dad said I was jealous that his son was so close to getting it, by himself, at such a young age, and that I was trying to ruin it. The kid then started crying.
I seriously couldn't believe it.