All three of us lay back, panting. For some reason, I felt the awkwardness slide over us again. What were we doing? How was this actually happening? I knew that reality would break in at any moment, the spell would crack, and we'd all be left with nothing but disappointment and shame.

"You're right, Lus," Kara said, "It is better when he cums on you."

The third time(!?) was even better(?!?!?!?!). Rather than join the girls in pressing, Kara decided to sit on the other side of me and get herself off with her fingers. We made a little masturbation sandwich that way, me stroking my cock, my sisters lying...