Love the idea of dad helping you with homework.
He tells you you'll get a nice reward when you finish your homework. When you put your work down on the table and sit down in his lap, you can feel his bulge poking at you.
Every time you get a question right, he whispers soft praises into your ear and gently pets your head, running a hand along the inner of your thighs and slowly trailing up to your crotch. Get a question wrong, and he's tugging your head back by your hair, brushing his teeth along the skin of your neck as a warning.
Halfway through, he's pulling your pants down just enough to slip his cock into you slowly, shushing you and telling you to focus on your work, you're doing so good for me, baby.
You can't help the tiny whines and moans slipping from your mouth every time he shifts around or presses into you more. You're desperately trying to focus on your homework, while your dad is gripping your thighs and pressing deeper into you every time you move.
Are you done, baby? He whispers softly as soon as you sloppily scribble the last answer. Good job, kiddo. You did so good. Do you want your reward now, sweetheart?
He pulls you up as soon as he sees your desperate nodding, laying you over the table and grabbing your legs. He slams back into you about as fast as he pulls out, shaking the table with each hard thrust into your tight cunt.
That's it, baby. You're doing so good, taking my cock. You were made to take your daddy's cock, weren't you? He groans and leans over you, continuing to thrust into you even long after you've reached your own orgasm. It's not long before he reaches his, burying nice and deep into you with a low grunt, filling you up nicely with your daddy's cum.
Such a good boy, He praises as he slowly pulls out of you, kissing along your back while leaving you a shaking, sobbing mess, leaking a mixture of his and your fluids onto the floor. He promises you another reward like this when he helps you with your homework the next time.