Rip her pants and fuck her ass.

You turn Monica around bent her over the desk, rip a hole in her pants. "Don't you dare." you say, while ramming your cock in her unlubricated asshole. She gasps in pain as you force your unlubricated cock into her ass.

"Ahhh!" she screams, as you penetrate her with your dick.

You grab Emma by the hair and force her head over Monica's ass. "You watch her ass while I fuck her ass." You say to Emmanuelle. Monica starts to cum on both of your hands and you imagine to release your load into her rectum. You keep your grip on Emma's hair and force her face into Monica's ass.

"Suck that bitch's clitty while I fuck her ass."

Emma obliges, sticking her tongue into Monica's crotch. Monica's eyes roll back in her head as she cums, her ass tightening around your cock. You grab Monica by her hips to keep her from falling off the desk as your cock is pulled out of her asshole. You quickly pull out of her ass and Monica collapses on top of the desk, catching her breath.