From the submitter:
Thought it was a friend joking around, but then it turned weird really fast. None of my friends owned up to this btw.
Dear Diary, today a stranger generously corrected my grammar for me. I learned valuable lessons about parts of speech and I hope my spoken English adheres more faithfully to standard usage. Thank you, kind stranger, thank you.
It must be a typography class, because that's a pretty unique font they're using. Yep, a typography class. That's the only explanation. Yessir.