Well, you still haven't fucked her ass...

You decide to go another round with Melanie, and head back across the room. By the time you reach her you're once again fully erect. Gripping Melanie by her hair, you drag her out of the shower and bend her over the sink. You give her round ass a good smack, and then another... and then another. Tommy's **** seems to have sapped most of the fight out of her; she barely manages a muffled objection as you line your cock up between her asscheeks. When you dig your fingers into her waist and **** your massive, dry cock into her tight, dry asshole, however, she wakes the fuck up.

"Aaaaaaaaaaiiiiiiiiiiieeeeeeeerrrrr," Melanie wails, her ear-piercing screech gradually turning into hectic sobbing. With your cock still buried inside her, you reach around and shove your hand into her mouth, jacking it in and out as Melanie bucks against you and tries to get away. When your hand is good and wet with slobber, you pull out and use your sister's saliva to give your dick at least a little bit of lubrication. Then, much to Melanie's chagrin, it's back to assfucking.

As you pick up speed, you reach around again and fishhook the big-titted bitch. In the washroom mirror, you can see the tears running into her mouth and the drool running out of it. And the harder you fuck her, the more violently her tits swing back and forth. Pushing her head down and pumping her ass as hard as you can, you manage to smack her in the face with her own tits. The sound of those big melons slapping against Melanie's wet face is so satisfying that you hold her in that position for several minutes. Her cheeks are red when you finally wrench her head back up to stick your fingers in her mouth for more leverage. You enjoy the sight of yourself savagely ploughing the topheavy ragdoll in the mirror.

When you can't hold off any longer, you get an iron-tight grip on Melanie's hair and drag her face towards your dick until her mouth is at the edge of the sink counter. Her eyes go wide, but with her exhausted body crumpled uncomfortably against the counter, she's in no position to stop what's about to happen.

"That's right, bitch. Ass to mouth!" you quip as you forcefully part her lips with your cock. With one hand holding her face against the counter, you use the other to pinch and slap her tits as you fuck her face. The **** of your pelvis slamming into Melanie's face is causing them to bob and wobble pleasantly against the edge of the counter. When you grip a nipple between your fingers she tries to squeal, pleasantly vibrating her mouth around your cock. It's too much for you to handle, and you begin coating the back of her throat with semen. Clutching Melanie's head in both hands, you slam yourself to the hilt and hold it there as you unleash the rest of your massive load, and a little bit after that. When you finally let her go, your sister convulses on the floor, coughing spit and semen and tears up everywhere.

"What did I miss?" Tommy asks as he walks in the door with a sandwich.