Bratty Sister JOI

It's late at night and you hear your Sister getting ready to go work at the club. You decide to sneak a peak at her outfit and spy on her in the bathroom. She catches you almost right away and gets mad. You didn't even try to hide yourself. She notices your boner and is totally grossed out. You tell her it won't go away and you need help. Your Sister says no but quickly changes her mind, she is too nice to say no. She is being a brat but she is giving you instructions to stroke. You love staring at your Sister. Her outfit makes you so horny and you listen to her soothing voice telling you what to do. She starts getting more into it and teases you a lot with her body. By the end she gives you a cum countdown from 3..