Your sister is chatting with her friend when suddenly farts! She is looking at you and understand that you noticed it she is feeling a shame but notice that you are hard she is laughing and asking why, and you answers that farts make you horny then she is telling that she has a lot of farts to go out and starts to fart right in your face after that she noticed that you are jerking off and she is asking you to cum for her p.s. open to any custom ides, so don't be shy to write in dm