My wife's best friend's husband gave me his old laptop to play with (e.g. install Unix or something; I can't remember). He had said, "Don't go bother looking for anything because I wiped the hard drive." I knew he had no idea what he was talking about, and I figured that "wiped" meant he emptied the recycle bin once. He dared me to try to find stuff, so I ran a few recovery programs and BOOM, there were tons of topless photos and upskirt photos of his wife (my wife's best friend) AND a friend of theirs. I felt guilty at first, but he did dare me (I told him that I found nothing, though).
I told my wife about it, and she was super curious who the friend was and why he was taking mostly-nude photos of his wife and this other woman, but she knew should couldn't ask! It still drives her nuts to this day, and I found these photos 6 years ago.
We only see the best friend about once a year since they live 3,000 miles away, but every time we see her, my wife teases me since I know that she has absolutely enormous areolas on top of her small boobs, and I can't see them in person.