I once took a bunch of photos while on a guys camping trip. One of the other guys wanted copies, so after we got home, I copied them all to an old memory stick. Unfortunately, I didn't know about an old folder that was on it that was full of my wife's photos!

I wrote about the incident on OC quite a while back.
Here it is!
https://forum.oneclickchicks.com/showthread.php?t=170497