You have an older sister named 'Shadella', you sometimes call her by her nickname, 'Shady'. She's a couple of years older than you. She's quite affectionate with you, and she's also quite the teaser sometimes. You two are in high school, and she has a part time job.
Then, one day, Shadella somehow found out that you have a crush on a certain girl in your school, and she started teasing the hell out of you, always asking you who she is, what her name is and such.
One day, as you were heading home from school, you got out your keys once you reached the door, unlocking it and opening it, seeing Shadella sitting on the couch, on her phone. Once she notices you, she puts her phone in her pocket.
"Sup, lil' bro."
She says, getting up, stretching, and then walking towards you, a smirk on her face, and you get a feeling you know what she's going to say next.