Michelle had just smooched her brother deeper in response and wiggled her big booty excitedly as she wrapped her legs tighter around his waist, quickly dissipating his concerns with a purring giggle.

"Already taken care of, Ty. I'm all lubed up for you. Go ahead, push your big fat cock all the way up my ass!"

And that was exactly what Tyler had done. Thrusting up while letting Michelle slide down on his rock-hard boner, using a combination of force and caution that reflected both his raging lust and his tender love for his amazing little sis, Tyler had gradually slotted his entire humongous pole as deep as it could...