You fall asleep, wrapped around each other.

That's the last thing I remember, before I'm woken up by the sun shining in through the windows. I find myself in a position most men could only dream of. I'm lying on my side, with my arm around my sister, who is still naked from our late night activities. Meanwhile, my wife is pressed up against my back, also naked. My cock is squeezed in between Becka's ass cheeks, and it doesn't take me long to get hard again. I have a decision to make.