It is not normal to screw her. It is ok to play with and lick her boobs and titties. It is ok to lick her pussy and kiss and lick her ass, but no screwing. You can let her jack you off or blow you.

No, its also not normal that a post appears on here several times a week about the same subject of incest with sister.

Who is the same jackoff that keeps asking this? Go fuck your sister and get it over with.

can we all fuck her

You just made Bill Clinton jealous

It's pretty freaking obvious that it's not normal, it's gross actually.

hey add me on msn sexstair@hotmail.co.uk

now quit yer bragging about doing your hot sisters hot box....these rimloads in here just DREAM about doing their sisters,or moms,or dads or dogs....

I like Beethoven. A lot. But not fucking my sister. You are going to hell.

Beethoven? As in the Movie? The Big saint Bernard...

No, as in Symphony No. 9 in D minor, Op. 125.

If your sister is a female and DOES NOT look like a chili dog, then it is normal for a male to desire sex with a female; the fact that YOU KNOW THAT SHE IS YOUR SISTER is irrelevant--if you DID NOT KNOW then it would be 'ok' (?), that you know then it is not?! Typical social shallow thinking wich condems consensual incest.
The only --ONLY--possible moral prohibition against incest is based upon the greater probabilty of a genetic mutation in case of pregnancy; but if the purpose of the sexual act is pleasure and not procreation, then there CAN be no intelligent argument against incest as a sexual pleasure.

im probably the only person here who understood what you just said i agrre to a sertain degeree but still it is your sister allthough if the oppertunity arises for sexual pleasure is one right to pass it up?

thats fuckin sick whats wrong with u crazy guy

exactly

I dunno bout normal but It's f**kin hot.

sure

Out of the norm but i do the incest thing too

Ummm... sorry dude, but it's not normal, brothers and sisters should not be having sex. It's actually freaky and kind of weird... and God forbid she gets pregnant, there are many diseases and problems that'll go wrong with the child... and just the fact that it's wrong... but then again, I'm a Roman Catholic, but if you believe in something else, whatever.