Your younger sister, Marissa
From Create Your Own Story
"What are you doing?" Marissa looks beyond shocked. She looks really disgusted.
"I, ummm, I'm sorry, I just came to see you and, I, ah fuck..." you give up and sit on her bed.
Marissa recovers from the shock and starts laughing.
She laughs and laughs for a good minute before being able to speak. You start getting annoyed.
"Were you using my panties as a hankie?" she laughs again, looking down at you sitting on her bed.
"I didn't mean to. Fuck, I... wha'..." you begin explaining, when it dawns on you that you gorgeous virginal dumb-as-a-stump sister thinks you were blowing your nose in her luscious twat-juiced knickers.
"Language, please" Marissa corrects, covering her ears dramatically in response to the defiling f-word that spewed so casually from your mouth.
"Sorry... but I saw them. I didn't know they were panties. They looked so nice and silky for my nose and it smelled so good to me. You must, excuse the wording, be fertile or in heat because its like a drug to me." You drop the panties like they're filthy.
You glance at Marissa and see a contemplative look on her face. You continue to your room.
During the day you decide you need to do something ...