In the privacy of her room, a horny teen decides to insert a rectal thermometer, her anal fetish getting the better of her. She lubes up the tip and slowly pushes it into her virgin asshole, gasping at the unfamiliar yet thrilling sensation. As she holds it in, she starts rubbing her clit, her pussy leaking with excitement. The thermometer slides in and out, her tight asshole gripping it tightly. She can't help but imagine a thick cock filling her instead, and she cums hard, her pussy convulsing as she removes the thermometer, her asshole twitching with post-orgasm sensitivity.