A better suggestion?

"Actually, I have an idea...if you're interested," Billy says.

"Of course, dear," Kim says, grabbing Tiffany's hair, "I always value your input."

"Okay. So instead of you face-fucking her, you just fuck her pussy first. When she's gotten you wet enough, you can fuck her ass like I did."

"Interesting. What will you be doing during all of this?"

"...face-fucking her."

"There you go. Nice and naughty idea, dear. Let's do it then. Make her clean your cock."

Tiffany considers speaking up, but recalls how well that has worked for her so far. If she pisses them off, Kim might just fuck her ass with no lubrication!

"Cat got your tongue, dear," Kim says with a smile, "Don't worry- Billy here will occupy that mouth."

Bill walks in front of her after slowly pulling his cock out of her ass. He presents it to her and she hesitantly takes it in her mouth.

It still tastes gross, but at least she is kind of used to it after earlier. She does love his big, thick cock though- in spite of herself.

Speaking of cocks, Kim puts 'her's' right into Tiffany's pussy, causing her to gasp against Billy's cock.

"Remember," Kim says, "No teeth. If he feels anything like that, you'll pay."

"I think our little slut knows that by now," Billy says, rubbing Tiffany's hair.

Kim pushes the strap-on in all of the way now and starts to fuck Tiffany in order to moisten the phallus.

"Slut- tell us how many orgasms I give you before I switch to your ass," Kim says.