Yes

Bravery never was a problem for you, so with a quick step into the hallway, you intercept your brother in the hallway. You are in your boxers, so you aren't surprised when his first glance is at your hard cock barely hidden by the thin fabric.

"Hey Tom, got a second?" You say, sure your brother will follow you into the room just on a whim alone.

Tom nods, blushing a bit, and heads into the master bedroom after you. You can tell he's a bit nervous, but he is a teenager after all.

Tom looks around the room and seems to be taking it in for the first time. "SO this is where mom and dad conceived me, huh?" Tom says with a slight chuckle.

You had both heard the stories, but you never really believed them when they gave the exact location. You shrug and close the door, locking it. Tom doesn't seem to notice or care. He's checking out the VHS tapes on a shelf.

"I heard they recorded a lot of their 'escapades' here." Tom said, picking a VHS dating roughly 9 months before his birth.

"You really want to see that?" You say, but quietly as Tom is already putting it into the VCR. "Is that a homemade porn?" You finally say.

"Probably...knowing dad..." Tom says, sitting on the bed. He grabs the TV and VCR remote, and turns both systems on. He presses play.

A few moments pass and finally you both see a scene of someone setting up a camera. "You know, I was hoping to get this room to watch these..." Tom says in passing.

You are about to say something back to him, when your mother, naked, passes in front of the camera. Following her is her own father, your grandfather, naked. You and Tom share a confused look, but then glance back to the video.

Your grandfather sits on the bed, and your mother bends over, and starts to suck his cock. Tom shrugs at you, and you can see he's getting aroused. Soon after, you see your father walk over to there they are at, and kneel down in front of his father in law. You realize what is about to happen and start to get hard yourself. Your father takes his father in law's cock in his mouth and starts to suck, while your mother licks her own father's balls.

Tom looks at you as if to say something.