I'll be a regular person, and you be a toilet.
I'll chain you to the anchor point I had installed behind it last month.
You can kneel, naked with legs spread, asshole plugged and a spider gag keeping your face hole open, and wait for whenever I need to use you.
You will NOT leave that room, or have any other human contact for the next 24 hours. You will simply be my toilet.
I'll go and do my own thing, and drink lots of fluids - when I need to piss I'll come in, pay no attention to you besides checking your mouth is open, unzip my fly, whip my cock out, and piss in your mouth and down your throat.
You'll be a good toilet and swallow every last drop, thirstily. After I'm done, I might acknowledge you by spitting in your mouth, giving you a slap, and kicking your cunt to make sure you have swallowed it all.
You'll then make a "flusssshhhhhh" sound, because you're a toilet and that is how toilets act, and I'll leave, shutting the door behind me.
Don't worry. If you fall asleep I'll wake you up by twisting your nipples hard, and slapping your idiot face.
It'll be fun! For me, anyway. You don't matter - you're not even a person.
Just a stupid, barely useful, pathetic object for spit, cum, and piss. A leaky toilet.