"On your knees."
"Yes, sir" you say. Hands bound behind your back by the silk cord he kept by the door. Naked and exposed to him, breasts pointed from the slight chill in the pleasure room, you slowly sink to your knees. His semi-hard cock hovered in front of your face. Out of instinct, you reach your mouth out to suck it in. But he pulls away before you can even get the head between your lips.
"Now, now, that beautiful mouth of yours is hungry, is it, you slut?"
"Yes, sir". He had been saying such delicious things all day long. Promises of exquisite pleasure and pain, of quivering orgasms and muffled cries of ecstasy...already your pussy was wet. You wished you could reach a hand down to touch yourself and get just a little relief from the ache.
Luckily, Master must have known what was in your mind because he reached a hand down to open your sweet bud and feel your wetness. His fingers brush against your clit, then quickly come off. He lifts his fingers to his face to see the juices dripping from his fingers. "That sweet cunt is so wet. It smells so good. You're such a slut for me, aren't you?"
"Yes, sir." You moan weakly. You want to beg for more, but you know that if you do before he tells you to, he'll just withhold the pleasure you crave.
"Well, then you must really want this big cock in that pussy?"
"Yes, sir!"
"Well I'm not hard yet. Suck on my cock until it's ready to fuck you. Suck it deep now, or I'll be disappointed."
He stands back up to put his dick in front of your eager mouth. This time when you open wide, he pushes it in instead of holding it back. His dick is still getting hard, so it's easy to take it all in, but after a few licks with your tongue and in and out movements, it gets harder and harder to keep it's full length in your mouth.
"Now, now, I said...DEEP!" At that final word, he grips your hair and pushes his cock down your throat. Your tongue has to slide out a bit to make room, and it drags across his balls. He holds it there until he feels you try to swallow a bit before fucking your face. "Yes, baby. Take that dick down that throat. That beautiful, slutty throat." In and out, pushing your throat to the limit. Your cunt absolutely drips knowing that he plans on doing much more to your waiting pussy.
When he pulls out for the final time, he pulls you up by your hair till you stand in front of him, still gagging a bit, and coughing. "What do you want? Tell me what you want."