You approach your sister to ask her about a rumor you heard going around school recently. You have heard a lot of the guys talking about her selling sex at school, and for pretty cheap too! Of course she denies this but you don't believe her for a second. She's always been pretty slutty and she loves shopping so this is definitely something she would do. She maintains that it isn't true, and even if it was it shouldn't matter to you because you're her brother! You keep persisting though and being a virgin you can't help but wonder if some money would entice her to take your virginity. You start off low balling her and she quickly declines and even says your low offers are insulting. Finally you offer $100 and to your surprise she seems interested. That still seems pretty low to fuck her own brother, but you definitiely aren't complaining. However she changes her tune briefly when you say you don't have any condoms. You realize she isn't going to take you up on your offer and at this point you are desperate. All this talk about paying your sister to take your virginity has you so horny you can't risk her turning you down now! You resort to threatening to tell your parents about the rumor. Now she's cornered and reluctantly agrees, but you have to be quick! She starts off with a quick BJ while rubbing her pussy to try to get wet for you, after all she doesn't actually want to do this! After a few minutes of that she starts riding you, starting off reluctant and teasing you about being a perv, but very quickly she admits that she's actually enjoying herself and she can't believe how hot this actually is. You both don't last long at all, and you cum a huge load in her pussy. After you've finished she's on top of you with your cum dripping from her and to the horror of you both your mom is standing at the top of the stairs... You guys try to play it off but obviously it won't work. You're both in big trouble now! Whoops...