Stop Becka

"Becka!" I whisper as forcefully as I can without waking Megan up.

"Are you already screaming my name brother? We haven't even started." She smiles at me as begins to slide her pussy lips along the underside of my cock which is already slick from the quick blowjob I just received.

I grab Becka's arms by her shoulders, "No, we can't do this!" I attempt to throw her off of me and the bed, but we end up both falling on the floor. I land directly on top of my naked sister. My head lands on the pillowy firmness Becka's breasts. The thump we make seems to disturb Megan's sleep, I hear her moan quietly and roll over.

"Shhhh....," Becka quietly says as she holds her head to my chest and wraps her legs around my waist. I become aware simultaneously of Becka's hard nipple poking into my cheek and the heat and wetness of my sister's sex as it begins to rub across the head of my cock.