The inevitability of bad behavior...

You try not to feel too bad as you drill Allison. For the second time in as many days, you find yourself balls deep in her petite body, stretching her super tight pussy and admiring her porcelain skin. She is definitely Karen's daughter, inheriting her beauty and fire. Had she really been a bitchy teenager not two days ago? How had this turned around so quickly.
Her squeaks are adorable and drive you crazy as you rearrange her interior geography.
"Ahn! Ahn! Ahn! Unc...le...James.....I'm still not...ahn! ahn!.... frick...!!" She's rubbing her clit with as much focus as she can manage.
You pull out and lay down, directing her to ride your dick. "You need to able to fuck in multiple positions to please those black guys with their big cocks, Alli." You can't really believe the words you are saying. This is the life advice and encouragement you have to offer your 18 year old niece, huh? Teaching her firsthand how to please big black cocks. Proud day.

She rides you without a lot of skill at first, and you clasp her hands and help her to gyrate, grind, and rock front to back as well as just bouncing up and down.
"Why must I be surrounded by beautiful women who I absolutely shouldn't fuck, who want nothing more than...mmmm...to fuck?"
"Stop complai....aaaahh....!! complaining..." she laughs, and moans intensely, rubbing her clit as she leans back to give you a different angle.
"Careful honey...you can break the dick when you're on top, don't lift too far..." it feels amazing, but you do feel that dangerous bend every now and then.
"Oh..I thought...mmm...that was a myth..."
"Oh definitely not, honey." You grab her hips, pulling her close to pound upward. "I'm going to cum, baby girl..." you wince as your nickname for Riley comes out unintentionally.
"Give it to me, James....give it to me..."
You unload, squirting up inside her as she moans and falls onto your chest. You cock pops free, dribbling semen onto the tile floor.
As you lay together in the throes of afterglow, panting, the front door closes.
"Alli!!! I'm back!" Riley's voice cuts through the air. You can hear car keys hit the kitchen countertop. "Daddy? Alli?"