I can always tell when a post is mine (so no false negatives) and I can't remember a time that I read a post that wasn't mine but temporarily thought it was (so very confident that no false positives).

There have been times when I and somebody else made virtually identical posts at the same time. So, technically, yes, it happens.

Also, when I go through the archive to look up who posted a particular image over the years, I am sometimes slightly unsure if it was me or somebody else. But most of the time, I am confident in my ability to recognize my own posts.
It would be a different story if you pulled up a thread from 10+ years ago and asked me to find every single one-line shitpost made by me though. But then, who could prove me wrong?

Do you ever see Ougi and wonder why HE is so cute

Sometimes I reply to my own post without realizing it was me until later.

>>72466
I think this is entering split personality disorder territory. You might wanna get yourself checked.

>>72465
No, because I wonder why SHE is so cute

>>72466
the gacha riddled brain...