Old rule: " is OK"

You find your sister incredibly hot, with that firm tight ass, those perky B cup breast, her flat belly and her tempting long black hair, but you know that you shouldn't think that because is wrong... But you could change that.

You open the rule book and write.

Old rule: An offspring of blood related siblings will not have any genetic defects.

Old rule: Sexual relationships between siblings is acceptable, even encouraged.

The world around you changes again, this time instead of there been two single beds there is one king size bed with a dark blue cover in the middle of the room, in the walls which are now all the same cream color there are new pictures of you and your sister, most are of you two kissing.

You smirk disbelievingly, it work, you are now dating you hot sister and for about 2 years if the early photos are any hint.

You turn to look at you sister at the other side of the bed, she is still in the middle of changing her clothes, so you watch as she strips from her clothes, making sure to print every part of it into your mind and puts on a way to small white bikini with blue flowers on the nipples and a sheer wrap skirt to cover her long legs.

This is making you really hard, it is basically a private strip show.

Once she is done, she notice you looking at her as she turns around "Is there anything wrong sweety?"

You smile at her "Just seeing how beautiful you are today"

She blushes slightly and gets on the bed next to you, she then starts to trace circles in your chest with her fingers "You aren't so bad yourself mister" She then gives the door a quick look and then turns back at you "You know, mom and dad did say that we have an hour to finish packing, and if you are quick we could have time to have some fun"

You really like the sound of that so you get of the bed and start to pack as if you life depended on it. Throwing pants, shirts and underwear into your suitcase.

This of course does not go unnoticed by your sister "Well it seems that someone is inspired, I will even make you a deal, if you are able to finish before me, which won't happen, I will take this with me" She then reaches into the bottom drawer of her dresser and pulls out a sexy black lace crotchless lingerie.

Your eyes pop out of your head, not way you are so lucky that you girlfriend/sister owns some think like that.

"Do we have a deal?" Your sister ask sweetly.

You can only nod.

She frown a little "You know how I like to close our deals" She says and then tapes her lips.

Yeah, no way you are this lucky.

You walk to your sister and wrap her in your arms, you then give her a passionate kiss making her moan, you enter her mouth with your tongue turning the kiss french, she is obviously loving this but she pulls away.

"I said after you are done" She says playfully.

You get back to your suitcase and see that even though you have pulled out everything you are gonna need, it still a mess, you organize it and finish in record time of 3 minutes.

"Honey, I'm done" You say singly.

Your sister who is about to finish turn to look at your finished suit case and her jaw drop "But you alway lose at that game"

Oops.

You smirk lustfully "I would like my price please"

Your sister pouts a little but puts the lingerie in her suitcase, I'm so gonna enjoy this trip, you thought, now for the fun to begin.