I kinda want to bang my sister

Very normal. Talk to your sister and see if she has the same feelings. If you do have sex make sure you're discreet. Brother/sister incest is a wonderful experience.

Well, I can sure understand you having the hots for her, especially if she lets you see her in her underwear. Sister or not, no guy can be blamed for getting turned on by a sis like that! Yeah that is definitely normal. And, while incest may not be considered normal, I personally do not see it as that big a deal, as long as both parties are consenting adults. Keep it secret between just the two of you, and it is nobody else's damn business what you do together. Oh, yes, btw, I do advise one or both of you using good birth control. The pull-out method (Onanism) and douching are virtually worthless. Condoms sometimes break. Make sure you buy a good reliable brand!

Princess Leia , my sister kissed me once .

it is normal to want to it is not normal to do so and tell others about it

I've completed extensive research in the field of human sexual psychology.. Cognitive science is kind of my hobby. It's normal to want your sister-- biologically, you're pretty much supposed to.

Now, courtship and romance is another matter entirely! While I have a lot of experience with this, I think you should just trust your instincts. (Yes, hands-on experience. I'm not a total nerd).

I should also add that I can relate to this personally. I have a sister, she's seven years older than I am. (I turn fifteen this December.. our age difference can vary.)

We've never had sex, but we both want to. We decided that It would be better to wait until I'm eighteen, because that's when It would be legal. I live in Ohio, so I've can do it without worrying.

We make out a lot, and there's some cuddling, too. Whenever she can come over, she always brings something sexy to wear. (She just wears it under her normal clothes, so our parents can't see. And also so that I can rip her normal clothes off!)

My advice? Again, if you're good at this sort of thing, you should try to romance her first. It depends on how mature she is.. Definitely wait until you're sure she's into you, too. Then fuck her.

Very, very normal. Just do it and fulfill your fantasies.

If you guys had grown up together, then this is not normal at all! It's called the Westermark Effect(http://en.wikipedia.org/wiki/Westermarck_effect), which is a psychological effect that desensitizes you to you sister's sexual attraction.
If, on the other hand, you had grown up separately, then it would be very abnormal if you were NOT attracted to her (Genetic sexual attraction). Then you might as well go ahead and do it - it would be actually good for both of you to be in a relationship (a single case of inbreeding causes insignificant genetic loss).
PS: But then make sure you bring your children up together to prevent any further genetic depression

Hey, I want to sleep with my sister cause she is awsome, super fun and hot as hell. I have rubbed her and she has jerked me off. I have given her oral and mmmmmmmm she is good and we have had sex once. she pushes her little ass against my cock at night when I stay at her place I am in my 30's and she is in her 20's we are both very honest with each other but she avoids the question of sex when I ask her.

What should I do?

I want her badly!

just because she is pretty dont mean she likes you she probly likes as a bro not in a sexual manner

It's normal when you come off age. If you are past 14 go seek professional help. She is your parents own flesh and blood.

yes this is weird. just dont think about this anymore. Its bad for your emotional health. Its your sister!! incest is disgusting and wrong. Just stop it!