It's time to go to the library. I get out the collar and the chain and the kneepads and call you over. You come quick, like a good little doggie, and fasten the kneepads around your knees. We leave the house and go down the stairs onto the street. We're going to fuck at the library.
Everyone can see you're my bitch. You follow behind me in your little purple outfit with a tail hanging down between your legs, your ass big and round and beautiful. All the men stare. I'm so proud of you my cock already is hard. You come up behind me and sniff my ass. That's enough. I push you away. You run ahead of me on the leash, energetic and eager, and I have to discipline you. I pull your firmly back with my chain and keep you on a short lead. I tell you to sit and you obey me, breathing hard. I pet you and give you a cookie. Good little bitch. You're already wet, I can feel it. You want my cock so bad you put your face toward it, as if to bite, but I pull you back and murmur to your patience, my beautiful dirty bitch. Patience. 

We get to the library. Everyone loves you. They come over and pet you and stroke you. We are looking for the classics, Herodotus, Cervantes, Shakespeare. A librarian leads us to the classics section upstairs. It's an old library, all cut glass and burnished wood, and she's a classic librarian herself— a drab gray cardigan with a button missing and glasses that hang from a chain around her neck. I watch her ass in her plain brown skirt as we move up the stairs. Not a terrible ass. I'm horny enough to fuck her. But nothing like yours.
We get to the aisle with the Cervantes and she leaves us there. I pull a cookie from my pocket because you've been so good. You're on your knees and panting, your hands gripping my thighs. I put the cookie under your nose so you can smell it, then raise it up, up, and you rise with it, up so high you have to stretch to get it and still can't, because I'm big and tall and strong. You can feel my bulge against you and it makes you desperate, you start whimpering and barking high short barks, yip yip yip. Your hand slips down my pants and holds my meat and I nearly come, you're so hot.
The librarian is back. She heard our commotion. Now she sees us up against the shelves with your hand down my pants and she does not approve. She folds her hands across her chest and looks at us over her glasses.
That's not allowed, she says.
That somehow makes us hornier. You snatch the cookie from my hand and eat it. Before I give you permission. I slap your face, then do it again, light little slaps. The blood begins rising in your cheeks. Bad doggie, I say. Bad bad doggie. Are you my bad bitch? Rowf! You bark. Rowf rowf!
The librarian hasn't moved. She hasn't said anything more. Maybe she sees the size of my bulge. She has her hands in her pockets now. I wonder if she's touching herself.
You're hungry. You plant a big sloppy kiss on my mouth, swirling your tongue down my throat and leaning into me, pushing me back so hard the whole bookshelf falls over, and the bookshelf behind that, and the one behind that, too. You laugh and jump on me. We're lying in a giant pool of books and the librarian is looking very confused. She wants to say something but her hands are in her pockets, her breath ragged.