Spreading our legs I felt Johnny's steel rod slide deep into my sister's pussy. As she came she grinded her pussy into mine making me cum too. Johnny ...ucked Beth slowly for a few minutes before pulling out and thrusting deep inside me.The feeling of my brother's horse cock, splitting me apart was fantastic. I came instantly and multiple times. I could feel Beth beneath me still coming too as I grinded into her.For the next few hours he fucked us back and forth Beth then me then Beth again. My. "Oh, dear," she said, shaking her head.We were left alone in their sitting room for a minute or two while Ruth and Max pretended to rustle up drinks for us. In reality they were probably engaged in a discussion about where to bury my remains. They must have reached a result fairly quickly because they returned with two glasses of Coke for us.Max sat down opposite from me. "Didn't they teach you about birth control?"I blushed. "They did, but I had not planned anything, and..." I caught myself. Kate said “Yes, we didn’t want to start without you” with a smile on her face, Marcus had a very large grin on his face. Still feeling very nervous but in my usual flirty way I said “I’d hate to disappoint”. I picked up two of the glasses and handed them to Kate and Marcus, my hands was shaking a little. I picked mine up and drank it down in one, quickly pouring myself another.Taking the lead I started to undress, Kate and Marcus soon followed until all three of us were stood naked. Kate knelt. It's not often you get to screw the daylights out ofa mother and her child on the same day."Mommy's face turned the same shade of red I am sure mine had. The wayLuke arrogantly spoke about having sex with both of us as if our onlyvalue was the pleasure we brought him was utterly belittling. It wasn'thelped by the knowing smile Tracie had on her face as if she possessedsome secret knowledge nobody else did."You girls won't have to worry about Helen anymore," Tracie said,levelling her gaze mostly.