why does it rustle my jimmies so much to hear someone say “he/him/his” or “she/her/hers” instead of just “he/him” or “she/her”

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why does it rustle my jimmies so much to hear someone say “he/him/his” or “she/her/hers” instead of just “he/him” or “she/her”
Do you know what I’m doing? Because I sure don’t
@quarterpastmidnight really helped me ease in into my "obsessed with vampires" era - encore.
Today I had a dream about being turned into a vampire by a vampire who vaguely looked like David Tennant (think like as if someone wanted to design David Tennant from memory but only saw that one Harry Potter movie where he played Crouch jr.). It was a really, really cool dream, but perhaps the funniest part of it was... I got turned and in my dream I got up and went to school the next day because I quite literally didn't know what to do. My new vampire dad wasn't very happy with my attitude and called me a dumb child...
But can you imagine if you had no idea that your old literature professor is a literal vampire and has been teaching for the past 129 years and the university was so disorganized that nobody batted an eye and he just went on teaching since that was his calling and he had no desire to do anything else... because that convo in the teacher's lounge:
"Ah yes, Professor Johansson, he's been with us now, what... fifty-odd years" "No, no, my dear fellow, you are mistaken. Johansson was already a professor when I was a student." "No, you're right, I also remember his classes..." "Hm." "Hm." "The weather's quite nice today." "Well, I say, I was just about to mention that... very mild today, very mild."