Incest

Someone on /b/ keeps claiming that we have genes that prevent us from being attacted to our siblings. How true is this? I for example find my sister extremely hot. I masturbate to her pictures all the time and would fuck her without a though given the chance.

>>52
Sorry man, it's you who should prove something is illegal. Things are legal by default, unless declared illegal, therefore you must be the one to try and find proof that it's illegal. Then run to your nearby priest, crying because it isn't.