Getting a different kind of relief

Having just cum and being flacid once again, you feel now's the perfect time to take a piss. You grab Tracy by the hair and slide her out from under her sister. As she collapses to the floor from the table, you pick her up and bend her over the table so her ass is pointed out towards you.

"Get down here whore."

Mia obeys and climbs off the table to kneel down at your feet. You move up to Tracy and start fisting your flacid cock into her asshole, which is surprisingly easy after you really did a number on her ass earlier, loosening it up nicely. Once at least half of your cock is wedged into her asshole you start releasing the contents of your bladder into her rear end. Tracy's eyes open wide as she experiences a familiar feeling, seeing as this wasn't the first time you had done this.

"Oh fuck sir, I can feel you filling me up with your piss."

Mia's eyes open wide as she realises what's happening before her. Feeling you're almost finished, you look down to Mia.

"Ready for a drink whore."

She looks up at you with a face of shock as she realises what's happening here.

"You want me to drink your piss out of my sister's ass?" She doesn't sound very alarmed, her voice is soft as she asks, but she's clearly surprised, maybe confused even.

"You got a problem with that whore? What, is this your first time drinking a man's piss?"

"No sir, a guy I hooked up with once asked me to do it but..."

Tracy pipes in to help encourage Mia. "Trust me, you'll love it sis. It feels so dirty and depraved."

Perhaps she wishes the roles were reversed, and she were able to drink your piss out of her sister's ass, but it's too late for that now. Mia seems to accept her fate and positions herself as close as she can to her sister's ass, opening her mouth wide. As she takes her position, you pull your cock out of Tracy's ass, opening the gates for your piss to come flooding out.

Mia shifts her position to try and line her mouth up with the stream but struggles to catch all of it, especially since it's coming out in spurts as Tracy makes periodic efforts to push the fluid out of her ass. Mia does her best to guzzle it all down but there's still a decent puddle that's made on the floor, not to mention what's covering her front too. She lets out a loud gulp as she swallows the last of it before looking up at you with a beaming smile and opening her mouth wide to show off she swallowed everything she could catch.

"Good job whore, now lick up everything you missed."

"Yes daddy." Mia purs, clearly having enjoyed the depravity being a filthy piss-drinking whore.

She bends down to the ground and starts licking up the puddle with her tongue.

"Can I help too sir." Tracy chimes in.

"Go ahead slut." She climbs down from the table and kneels down opposite her sister. The two of them work in tandem to lick up every last drop of your piss that's dripped down onto the floor.