you were born with a rare genetic mutation that caused an extension of your spine beyond the sacrum, forming a long, slender tail similiar to that of a lizard but covered in skin like the rest of the body instead of scales, and it is also fully functional, but that meant you always had to cut holes in your lowerwear to fit your tail in. Despite that, you managed to live a normal life and never amputated it, despite the request of the doctors to do so since it posed no real threat to you. You wake up, your tail hanging off the side of the bed. You have to get dressed up and go to work