Fuck that! Shove it in her ass!

You shake off that urge as you recall what an uptight bitch Melissa has been, and surely will be again once she regains her composure. You look down at her exposed ass, and your dick swells. She's only had two guys in her pussy, so what are the odds that she's ever taken it in the ass? That's what this bitch really needs!

You reach down with your free hand and scoop up a glob of pussy juice from your balls, then smear it between her perfect, round cheeks, working it into the puckered flesh of her sphincter. She tugs her head around. "What are you doing?"

You shove her head back down to the table. "You're forgetting your place, ****. I do as I please!" You slip your finger into her tight asshole.

"Oh, god, no! Please! Don't!" You continue to fuck her pussy as you work your finger in and out of her ass, feeling your dick as it stretches the thin layer of flesh between the two passages. You work a second finger in, and begin stretching as she begins to twist and gyrate.

"Need I remind you, whore, of the rules of this transaction? I was gracious in allowing you to cum on my dick. Apparently you take my generosity as a sign of weakness of will. Not only are you resisting me, but you haven't addressed me correctly in some time. You need to learn your place!"

Melissa mutters under her breath, "Oh, goddd..."

"I don't require you to call me 'god'. 'Master' will do just fine." You pull your dick out of her still-dripping pussy and position your glistening head against her tiny asshole. She stiffens, bracing herself. "Now, beg me to fuck your asshole, you worthless cunt."

She replies in a tiny, wavering voice, "Please..."

"Go on, whore, finish your sentence."

"Ohhh, GODDD!"

"Look, you silly twat, we can do this either of two ways. You can beg me to fuck your ass, and make me believe that you want it, or I can tie you up, fuck your filthy asshole until I'm ready to cum, then shove my shit-covered dick in your pretty little mouth and make you eat my cum along with your shit. Either way, you're about to feel my dick in your ass. You decide."