Becoming My Sister's Daughter-in-Law

 

I was looking down over Gennevive's amazing tits, jerking of my nephew... "I can’t believe you’re making me jerk you off… I’m your uncle for gods sake! I thought you weren’t going to be here and I could hang out as your girlfriend and spend time with your mom…  (wow… it’s really big!)"

He twiched in my hand and said, "You shouldn’t have pretended to be Gennevive then! Now we’re stuck for the week on this family trip and they all think you’re my fiancée!  You don’t want my mom to know her own brother is in that sexy body and sleeping with me do you?"

"No! I could never live it down! She’d probably have me sent to jail!  But…oh god, I love the view over my tits watching your cock bounce!"

"I like the view too… and you do that better than she ever did!"

"Your mom keeps saying things about grandkids… It’s weird when she treats me like I’m going to be her daughter-in-law… ohhh… you twitched so much! "

"Gennevive didn’t want kids… that’s why she left me… I can’t get the idea of putting a baby in you out of my head!"

"She…left you? Maybe you shouldn’t get that idea out of your head…."

"You mean?"

"Let’s not waste this load on my belly! Let me stay and be part of the family again… as your wife and babymaker!"

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