The fucking is nice, hard and raunchy and i'm allowed to cum several times. To my big surprise Charon gets between my legs and licks Troys cum right out of my pussy. Not very Mistress-like. But then again, she's the Mistress and if she wants to do that who am i to judge her.
That is, the fucking is nice up until the moment Troy rams his dick up into my ass. I scream in agony, he sure has ripped my anus apart. A searing pain shoots through my body and my teeth dig into Charons flesh, but i don't do it on purpose and am immediately sorry. He keeps on fucking my ass hard, despite my begging for him to stop. Finally he shoots his load deep inside me and withdraws.

Then they both leave the bedroom and i feel bad about biting Mistress and cry a little. When Charon comes back, alone, she hogties me again. I am too drunk and tired to ask her why. I just lie there, feeling the cum oozing out of both my pussy and ass. I've certainly become a slut. And come to like it, too. Then i fall asleep, despite the uncomfortable position i am in.
When i awake i'm all alone, still hogtied. I have no idea how much time has passed. Too much, obviously, i feel a wetness beneath me.
Oh my god. Please no!!! I must have peed while i was drunk and asleep. I peed in Mistress' bed!!!
There's nothing i can do about it, tho. And where is Charon anyway? I listen intently and finally i can hear a soft snoring from the living room. Ok, at least she's ok and here. I worry about what will happen when she realizes i peed in her bed. I'm sure the punishment will be bad.
After a long time i hear her stirring and at last she appears in the door. She releases my bonds and i'm all stiff and hurting. It takes me a couple of minutes to stretch. She seems to worry that i'm hurt.
"That was a wonderful night, Mistress. Thank you for allowing me so much fun."
"So you're ok?" she asks.
"Yes, i am, Charon." I wonder what i should do about the bed? Hmm, there's only one option; being honest.
"There is something i need to tell you, though. I ... umm ... i seem to have peed while i was asleep. I am very sorry, i didn't realize it."
"What??? You pissed in my bed? You dirty cunt! You will be punished. And punished severely."
"Yes Mistress." My voice is a hoarse whisper. I'm so ashamed. "I know."