i dunno if this has happened to anybody else, but i sometimes forget the contours of my female parts. say, like i'm sitting at a table and have my hands below, then i suddenly happen to take my hands to the top of the table. i forget i have extra flesh on the front and yeah, my hands hit them from below on their way up. sometimes even when i'm standing i forget and raise my hands too close to my body, and they collide. sometimes when i stand close to people measuring the distance from my face, i forget to give room for the protrusions and their hand or shoulder collide with them. that's pretty embarrassing you know.
sometimes i intentionally forget they are there, like when i'm alone at home i take off my shirt and pretend i have a flat chest. i don't look down and walk here and there. when you're in a shirt the fabric touches them so you are reminded that they are there, but shirtless and away from mirrors it feels a lot better.