Bratty step sister JOI

You're home alone - you and you bratty step sister, so you're feeling kinda bored all alone in your bedroom and decide to go check on your sis. Turns our she isn't very much into you, nor very keen on spending time with a pathetic loser like you. But since she's got nothing better to do for the time being, she decides to play around with your mind and your body a lil and gives you a challenge: to jerk off to her teasing you and not cum before she tells you to. hahaa do you think you will be able to do it? She wants you to follow all of her jerk off instructions and not disappoint her at all...oh and you better have a really nice, big load for her at the end :)