Fuck her roughly

“Your name isn't 'Lacey' anymore. Your new name is Slut and you're going to spend the afternoon earning that name.”

Lacey's breathing picks up, but she doesn't object.

“Stand up, Slut.”

“Yes Master,” says Lacey breathlessly.

You grab Lacey's arm and lead her to a wall. You roughly push and pull her limbs into the position you want: hands against the wall and slightly bent over with spread legs.

“I don't know what makes stuck up little starlets like you come to me, Slut. You're such a hot bitch, you could go to any bar in the city and find a guy for sex. They'd lick your pussy for an hour and beg to do it some more.” You notice Lacey's head start to turn back towards you. “Eyes front, Slut!”

“Yes Master!” her head snaps forward and she stares at the wall.

You smile and reach around her to squeeze one of her full, round tits. “Maybe that's the problem. Are the guys falling over for you so easily that you need a real man to fuck you, Slut?”

“Ye-!” She breathes in sharply as you squeeze her breast. “Yes Master!”

“Yeah, not to satisfy you, not to make love to you, you need a man to just hardcore fuck you. Am I right, Slut?”

“Oh God, you're so right, Master! Please fuck me!”

Your hand rears back and swings forward to smack her hard on the ass. “I said you are only so to say 'Yes Master' and 'No Master.' Are you going to forget again?”

“No Master!”

“Good. Then you can have a fuck.”

The anticipation has turned your dick into a big steel rod. You lift it up and jam it into her dripping pussy. Lacey screams at the harshness of your entry, then bites her lip to shut herself up. Grabbing her tits with both hands, you pound into her harder than the fawning pretty boys she dates would ever dare.

Lacey cries, “Oh! Oh! OOOOHHHH!”

“What's that, Slut? Were you trying to say something?”

“N-n-no Master! Unnnngggghhh!!”

You slow down a bit and slide your hands down her body. Your palms cup her sweet ass for a moment, squeezing it gently. When Lacey starts cooing in reaction to the gentler treatment you move your hands to her hips, hold her tightly, and thrust your cock into her harder than ever.

Lacey screams through an amazingly wet orgasm. She's practically drooling as she finishes, but you're not done. You keep bucking into her for several more minutes, punishing her tender, underused pussy. When you feel ready you pull out and spray your cum all over her tight ass. Soon her ass looks like a sticky abstract painting from all the lines of cum you put on it.

“Get to the bathroom and clean yourself up, Slut. Then get back out here and get back on your knees for the next part.”

“Yes Master.”