Oh fuck. I can't tell my sister's boyfriend I'm not her. He would kill me.

I just switched bodies with Kristy so she could take my Chemistry test at community college. She passed last semester and I promised her $100. Plus, I need the passing grade! She never said he might come over. Before I could stop him at the door he was on top of me. I just have to hold on. To get through it. . . I just have to. . . Oh god - I think I'm getting close again.

He's so deep. He's so THICK. I had no idea it felt like this for a girl. The way he's driving into me and how he's pulling my hair. The way my sister's tits swing beneath me.

Wait. . . NO. I don't like this. I don't! This is awful. This is the most horrible thing that has ever happened to me.

OMG that angle feels good. Y-yes. Right there. Like that.

"Yes, like that. Fuck me like that!"

How many times have I cummed? I'm starting to lose count. I'm on the edge and he's nowhere close to being finished. Maybe it's a bad idea to keep coming. Orgasms make me feel so foggy in my head. I can't believe his stamina. He just keeps going. He keeps fucking me. Flipping me. Throwing me around my sisters bed like a rag doll and plunging into me again. Just hold on. . . He can't last forever. Can he? Maybe if I scream louder it will take him to the edge?

Oh gawd! Listen to my voice. I sound like a total slut being fucked. Oh fuck. . . it's here. I'm on the edge of another orgasm!

"Yes! Oh fuck! I'm cummmmmming!!!"

Why is it so good? I don't know how much my body can take. I feel so conflicted. I don't know what to do. All I can do is hold on. Just hold on. . .

"That's right, babe. Wrap your legs around me like that. I'm not even close to being finished fucking your tight fucking body."

Hold on. . . Hold on. . .

Two Weeks Later

My brother is the only person home. It's fine, baby. You don't need to worry about him. God, I love having you in my mouth. If I didn't need you inside me so badly I'd take you all the way with my lips.

We can be as loud as we want today. And we are going to. I want him to hear us. If he has a problem I'll tell mom and dad he's talking shit again. Can you believe he's spent the last two weeks saying he's me? My parents finally got sick of it and grounded him. He was acting totally hysterical. Serves him right for calling me a bitch imposter and freaking out. I don't know his problem lately but I just have to hold on - and he's just going to have to get through it.

Would an imposter suck dick this good? No. I'm Kristy Abbington and always have been. I swear. These are MY tits and MY pussy and nothing my stupid brother says is going to make me doubt it.

It's time. You are hard as a rock and I want to be on top. I mean - would my brother straddle you and put you inside of my pussy? Fuck, no.

I think our relationship has really taken a turn for the better. Last night you said I've been on fire lately. You said in two weeks I've become the best fuck of your life. I want that. The way you fuck me makes me want to be the best girlfriend ever and I will be! Giggle! That's right. I'll show you with my mouth and my tight pussy. It's all yours. I'm all yours. Just hold on. Hold on to that ass and fuck your girlfriend.

...........................................................................................................................................................

Original author: FinalChange Sent to my by Cbrorigins.

Repost of a caption already on this site to add the missing images.