The 21-year-old's uniform skirt hiked up, her tiny G-string pushed aside, she feels the older man's cock, a massive 6 inches, pressing against her tiny, untested asshole. She gasps, her small hands gripping the desk as he begins to push in, her tight, virgin sphincter stretching to accommodate his thickness. He groans, his strong hands digging into her hips as he fills her completely, his balls resting against her dripping pussy. Her eyes water as he sets a steady, deep rhythm, fucking her raw and hard, his cock slamming into her deepest depths, claiming her young, untouched ass in a taboo, intense backdoor debut.