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You were on your way to Filch's office. You got caught in a prank with the Weasley twins and now you were on your way to face your punishment. You opened the door and were met by Filch's greasy voice:
"Have you not learned that it's rude to not knock before you enter a room?"
"Sorry", you answered quickly.
"Sorry, what?". His eyes were looking right through you, making you uncomfortable.
"I would say 'Professor', but - correct me if I'm wrong - you don't have this status", you snapped.
"Someone wanting to make their punishment worse, I see. Now wait until the night is over. You won't dare to talk like that anymore, once I'm done with you."
You just huffed and Filch got up from his desk, Mrs Norris following him closely.
"Your first task for the night is to feed my cat", he said, picking up a tin can of cat food and handing it to you.
You quietly accepted and got over to where the cats bowls were placed on the floor. As you bent down, you could swear you heard a moan behind you.
"These robes don't do anything for you. I bet you have a pretty little ass underneath them". You stiffened. Filches voice was slightly teasing and you could practically hear the smirk forming on his thin lips. This was not going how you planned it.
Suddenly you felt strong hands grips your ass and before you knew what was happening, Filch was rubbing himself on your ass. If it weren't for your winter cloak, you would've easily felt his length through the fabric separating the both of you.
"Such a good girl for good old Filch, receiving her punishment quietly. You knew what was going to happen, when you've been bad, mmmh... Wanted good old Filch to take you like all those other needy sluts before you?"
"Mmmhh", a quiet moan was all you managed to get out, already delighted with pleasure.
"Make your clothes disappear. Use a spell", Filch whispered in your ear, his wet voice making the shell moist. You obeyed and a second later you were all naked in front of him.
Filch turned you around and sat on the ground, his back on against the desk, pulling you into his lap. He started rocking slightly, making you moan in pleasure. You craved for friction, for the feeling of him.
One of his strong hands grabbed your ass, holding you in place, while the other reached over to the side. You only heard making a sound of protest, but didn't dare to look over, too gone in licking the delicious taste of Filches sweaty neck.
"I got something better for my babygirl. C'mere."
With a groan you pulled away from his neck and soon your lips were met by his fingers, dripping of some strange, but enjoyable flavour.
"Suck it", he commanded, as you begun to lick off the sauce on his long fingers.
"Only the best for my pussy. Will you be my pussy?". Being so lost for words, all you could manage to get out was a moan.
"Answer me. Will you be my pussy?" he repeated, more stern.
"Yes, sir." you answered.
"That's enough for my slutty girl. If you really mean it, you will have to show me." and with that he suddenly pushed you off him, got up and left the room, leaving you aching for him.