Danya would set her up. She told her new pets what to do...

It was getting late when Lisa was getting ready for bed. She walked into her brother's room to tell him goodnight but he wasn't there. Instead, there was a note that said: "Meet me in mom's room."

That was curious she thought. She walked down the hall and heard moaning noises. The door was cracked open.

"Mom! Brother!"

She opened the door and nearly fell over. She saw her mother riding her brother's gigantic cock, which was much bigger then she rembered it (from when she once walked in on him in the shower). His body was also more muscle toned. Karen was playing with her breast as Lisa's brother shoved the cock deep in her pussy. Both were dripping with sweat and the smell of sex filled the room.

"Fuck me! Fuck me now!" Karen moaned, "Fuck me my son!"

Danya was in human form holding a camera.

"Didn't your mom tell you it's polite to knock?" Dayna said.

"Pretty sure I did. She's being bad. We may have to spank her," Karen said.

Lisa felt herself exicted by the pure nastiness of this but tried to fight it. "What are you doing?"

"Fucking your brother, what does it look like? Don't tell me you never thought of it. Like when you "accidentally" walked in on him. Don't tell me the sight of his strong glistening muscles doesn't excite you," Karen said.

"And his throbbing cock," Danya added.

"I..I..." Lisa muttered.

"Come on sis, have a taste," he said.