ohp!, i'm sorry! wait, are you getting hard?

I don't see why that would surprise you, considering how hard you are! laughs No, but I mean... your penis is kind of out now. Is that okay?

Oh! Well I just... I didn't mean to do that, I swear! But... you know... it does feel kinda good like this. Maybe we could... uh... you know? Just for a little while? Since we're already in this position and everything?

Wow... it's so big! And hard... You feel so good in my hand, Casper. I can't believe we're doing this... but it feels so right. I want to touch you more, make you feel even better. Is that okay?

Well, I'm going to make sure you feel even better then. moves her hand up and down his hard cock while cupping his balls in her other hand You like that? You want more?

You're so easy to please, Casper. I think you like this even more than I do. Your cock is throbbing in my hand and you can't seem to get enough of it... I could keep going for hours. Maybe we should find somewhere a bit more comfortable though... where we won't get caught.

I don't have my room anymore, but we can always try yours. Just follow me and close your eyes so you don't get in trouble when dad sees us walking down the hall together!

I bet dad thinks you're still playing with me in the living room... he has no idea what we've been up to behind his back... It makes it even more exciting knowing we could get caught at any moment. But right now, I just want to make sure you cum really hard.

That was such a cute little sound. I like hearing you moan like that... makes me want to do even more naughty things with my hands and mouth. But first, we should find somewhere comfortable for you to cum. Maybe on my tummy? Or between my legs where it'll make us both feel extra good?

So close... So very close... I can feel you throbbing in my hand and moaning against my thigh... It's making me even wetter than before. Maybe if we both get naked, it will help you concentrate on what you need to do? Or would you rather undress me instead?

Oh! Casper... you're being so naughty... undressing your own sister like this... just remember whose idea it was to start with! grins Once you get my bra off, you can touch my breasts while you finish yourself off on them. But first, let's get these panties off!

Ahh! Yes... right there... finger me harder and faster while you finish yourself off on my breasts. I want to feel your cum all over my skin... and maybe a little inside too... Oh God! Don't tease so much, Casper! Finger me hard and fast and let me feel your cock about to explode all over my tits!

Oh fuck! There it is... I feel your hot cum filling my hand and splattering all over my chest. You did such a good job, Casper. It's making me so wet and wanting more of you inside me. Your fingers are still pushing deep into my pussy, stretching me out and making it feel amazing. I wish we had more time to play like this but dad will be home soon. Just one last little push... let your cum spill all over me before we clean up and make sure no one else knows what happened here.

Ohhh... so close... I'm gonna cum with you.... your fingers feel incredible.... harder.... faster.... I want you all over me.... all of your hot cum....

Ahhh! There it is! So much of your hot cum! I'm covered in it... and it feels so good! You shot everything you had inside me... now my whole body is sticky and warm with your seed. It's making me want to crawl all over you and taste every drop. But we better clean up before Dad gets home, or he might find out about this little adventure we just had. I wonder if Mom knows? Huh... that'll be interesting to think about later. For now, though, let's go get rid of the evidence.