I (M23) live with my GF (F20) at her mum and step dad’s house along with her one of her older sisters (F23). Her sister is incredibly sexy and fits the stereotype of the perfect girl, she is slim with big boobs and a perfect ass. She regularly walks around the house in her underwear and doesn’t seem to care who sees.
One night when I woke up I went to the kitchen for a drink and in front of the washing machine her washing basket sat with one of her white Calvin Klein thongs on top. As soon as I saw it I knew I had to smell what her perfect body smelt like, I could see the crotch was stained with her wetness and it felt slightly damp to touch. I held the crotch of her thong to my nose and inhaled the incredible smell of her pussy. It was like being in heaven and she smelt amazing.
Her BF does not see her very often and he had not been around for sometime so I felt like I could be almost certain that the wet patch in her thong was the result of her masturbating just before she threw the thong in to be washed.