We have family over. My hubby's step-sister and her boring husband, his parents. His step-mom is nice and quiet. His step-dad is - well, he is said to be the bull of the entire family. And headstrong. It's his way or the highway. Poor step-mom had to deal with his many infidelities over the years. And the story goes that some sexual encounters happened right under her nose. While she was in the kitchen cooking, he was somewhere with her friend or a neighbor's wife fucking her. He is a good looking guy, even at his age. And the whole family talks about his giant dick. Maybe that's why step-mom stayed with him. We have plans to go out for dinner, the whole bunch of us. Step-Dad went to lie down, have a nap, in our bedroom. I need to get ready, get changed. When I walk in the bedroom, he is fast resting. I choose what I want to wear for the evening. Black short skirt, tight blue top, sexy red thong, matching bra. It's hot in the bathroom, A/C doesn't work there. I go back to the bedroom, check that Step-Dad is still napping. I take a quick peek at his crotch. Wow! What a huge bulge! I stand in front of the mirror, take off my clothes, admire my body with the perky little titties, and the bush between my legs that I take good care of. When I turn around to check on Step-Dad, his bulge is even bigger! WTF! Fascinated by the size of it, I get closer, touching it over his boxer shorts. He still doesn't move. Should I? I really can't resist, I've just got to see it! I look inside his shorts. OMG! This thing is a monster! I know I shouldn't do this, but I take it out, take a closer look. Why didn't my hubby get a dick this size? His is on the smaller side. Before I tug it back inside his shorts, I give it a little kiss. WTF! My head is being pushed on that huge thing, my lips are pushed open! Step-Dad! He woke up! Or pretended to rest. Whatever the case, I know have his giant cock in my mouth, having it shoved down my throat, with my husband - his step-son ! - just a few steps away in the living room! Step-Dad moves my head up and down on his dick. He deep throats me. I gag. I moan. I suck and lick. I'm becoming a submissive cocksucking slut! And I love it. Then he pulls on my arm, makes me mouth him, cowgirl style. This monster hardly fits in my pussy! And then he fucks me. How the hell can he bang me so hard and fast, at his age? I'm cumming. He warns me to be quiet, and I try. Still I moan. And cum again. And again. I'm afraid they can hear me. Then I feel his cum shooting up my vagina! No! I can't have my step-father-in-law's sperm inside me. And hubby is calling for me. Fuck! Step-Dad's load was big, and his cum is running down my leg. I'm trying to clean it up, but it keeps coming out. And hubby is calling me again, this time much closer. I quickly put on my skirt, my top. I forget the bra, no time. And go for the door, his Step-Dad's cum still running out of my pussy, down my leg...