I'm getting ready for a night out flirting with the boys when my big step-sister enters my room. She's holding a video camera filming me as I'm sitting there putting on red lipstick in front of the mirror. The only problem is, the lipstick is my step-sister's and I'm using it without her permission. Step-Sis got me on tape and there's no way I'll be able to talk my way out of this. She gets so mad at me for taking her lipstick without asking her first and tells me to give it to her. From the past I've learned never to argue with my step-sister because she's so dominant and always get her will, so I hand her the lipstick without putting up a fight. Step-Sis tells me that now she's caught me on film she might as well go tell step-mom that I'm a little thief and that I'm flirting with boys. I plead step-sis not to tell step-mom because that would definitely get me grounded for at least a week and I don't like being grounded! Step-Sis listens to me and says that she won't tell step-mom if I accept a bit of humiliation. I know exactly what kind of humiliation my step-sister is talking about, I've known her all my life and she's always enjoyed gagging me when I didn't behave. I think it's called a gag fetish or something... I don't know. All I know is she's a dominant girl and she gets off seeing me, her little step-sister, gagged and humiliated. I'm being blackmailed and made to follow my step-sister's instructions to keep step-mom outta this while I'm being filmed. Step-Sis makes me gag myself with her red ball gag as tight as I can and tells me to put duct tape over it. She's so mean and she even writes "SLUT" on my tape gag while I helplessly cry and struggle to talk. If you don't believe me just watch the video my big step-sister filmed and see how humiliated I feel when she makes me gag myself!