This is still my stuff.

If you tell people often or long enough that the people in "you and me did it" really ought to be "you and I" (as I'm the subject of that verb), what'll apparently happen is that they'll ignore it for ages, and then all of a sudden, over the last year or two, develop it into some sort of meme, whereupon they all start using the subject "I" in places where the object "me" is required. "A photo of my partner and I" - huh? Is it a photo of I? No, no, and thrice no. It's not. It's a photo of me, isn't it.

The most crushingly irritating thing about it is that people make a point of doing it. Egregious, yo.