totally different anon here but just wanted to interject. i do the slouch-to-avoid-making-people-uncomfortable thing too!! i'm 5"10 but am occasionally guilty of wearing a couple-inch flatform (i cannot walk in heels, honestly i look like a newborn deer). the slouch is pretty much my default though. grew up as the tallest in class + all my female friends have been 5"5 and under, i always feel like i stick out so slouching is the most natural thing for me.

always wondered if other people did it too, cool to know they do! :-)