Option 2

It has been 8 months. Now sis has a huge belly and bigger tits. Their not huge but at least now she can where normal bras. You two just went shopping for baby supplies and are heading home. "Can you believe just a year ago we started feeling horny and banged. Now I'm gonna have your baby. How awesome." We arrive home. We moved out of mom's house and now live in the suburbs.

We walk in and she uses the rest room. I begin to make a sandwich. "Hey bro, my pussy feels horny. Wanna come fuck a pregnant soon to be milf." I stop making the sand which.