You can't help but notice & be disgusted by your sisters unshaven armpits & bush, she notices you looking and mocks you for being disgusted by something so natural, She tells you that you'd still want to fuck her despite her hair and probably end up loving it so much that you wouldnt be able to resist cumming in her tight hairy pussy & impregnating her. She challenges you to prove it! If you are unable to cum you obviously dont have the hots for your sister, or her hairy body parts but if you do cum, then you have the hots for her She teases you with her body, calling you a sister fucker & sister pervert, she sucks your cock giving you lots of eye contact, amazed by how big your cock is, try not to cum so fast that would be embarrasing! She finger fucks her hairy pussy for you as you watch before climbing on top of your cock and riding it. She is surprised at how good it feels, and tells you that if it feels as good for you as it does for her, there is no way you're pulling out! Maybe she will end up pregnant after all She turns round so you can watch her ass bounce & jiggle as she rides you, encouraging you to cum in your gross disgusting sis who you hate so much You fuck her missionary as she tells you to cum inside her & you shoot a huge load in her pussy! She will definitely end up pregnant, but maybe that fuck was worth it.. what will we tell mum & dad?? ooops!