Yea i had such a wry smile on my face when i had to introduce myself as he/him on the first day of a college class, and like you had the urge to say something sarcastic along the lines of 'whatever you want' (which a couple years later become an earnest queer response) or 'i dont really care' or 'why do i have to do this?'.

Why this dismissive hypermasculine white smirk on my face? Because it was a silly exercise since basically everyone was obviously cis, or was obviously cis but tacked on a 'she/they' just to signal some superficial allyship to the trend/friends, or (for one or two clear cases) very clearly wanted to be addressed as they/them as was signaled by some mix of shaved off eyebrows, self-cut androgynous hair, experimental makeup, and torn up shirt or super expensive turtleneck? No. My humor was actually my problem. A defense mechanism against admitting to myself that deep down, truly, i desired to be a free blue haired they/them nb unicorn, but was too scared to admit it. So instead i made everyone feel unsafe with my microagressice hate filled smirk and subtley unenthusiastic he/him