SCENE ONE- Finally, you get to hang out with your sister-with-benefits at an expensive hotel on vacation.. the only problem is you are with your parents which makes things a little tricky if you both wanna have some fun. Mum and Dad are at the pool, waiting for you both. Your sister thinks its too risky, but you wanna have a quick fuck before hitting the water. She is reluctant, but as soon as you show her your raging hard on, she reconsiders and jumps on it! You know you've gotta be quick as Mum and Dad are expecting you both, but you just can't cum, so your sister tells you to put it up her ass. You can't believe it.. WHAT? You squeeze it inside her tight asshole, but she complains about the pain, so you stick it back up her pussy and she fucks you reverse cowgirl, until you hear your parents approaching! The sound of Moms voice makes you explode inside of your sister, and you both quickly gather yourselves before you are caught! Once your parents have left again, your sister strips and puts on her swimming costume (she did want to wear a bikini, but Dad wouldn't let her!) and you both head down to the pool. SCENE 2- You return from the pool to your hotel room after a few hours of being teased by your sister under the water in front of EVERYBODY. She is looking smoking hot with her wet hair and tight costume sticking to her skin. She lies back on the bed and pulls her costume to the side. You push yourself inside of her and begin to have sex when she asks if you'll put it back up her ass again.. she even gets out her vibrator to relax herself. You can't believe how cool your sister is for letting you do this! You ease your cock inside her asshole and she moans for you to push it deeper... deeper... slowly... easing it deeper. She brings herself to orgasm and you carry on for a few minutes fucking her ass until she asks you to stop. She wants to taste her ass off your cock.. ok wow, this is unreal! She sucks your cock nice and deep, asking you where you wanna cum.. you wanna cum ALL over her, so she lays back on the bed and you stick it back inside of her for a few moments before pulling out and exploding in two huge cumshots all over her body...