I went out for drinks with my friends and walked in on my daughter and son fucking! I knew my ageplay phone sex daughter was a cum slut just like mommy! They were in my bed and didn’t even hear mama coming in! He had her bent over the bed with her ankles in his hands. I stood peeking through a crack in the door as my boy showed how well he could wield a sword! He was fucking his sister so good I could hear her pussy making mac and cheese sounds from 10 feet away! I wanted to go in there and lick on her clit so bad while his balls slapped against my face! I stayed where I was though, so they could enjoy their brother/sister phone sex experience! He grabbed a fist full of her hair while he fucked his slutty sibling. I could tell he was about to cum based on how his nuts looked while she was throwing her fat ass back. I started to squirt and cum down my legs as she squealed while being filled up. I love watching them play nice with each other. If I find them like this again, I can’t be sure that I won’t join in.