Sans reached towards a dick and a tissue. Masturbation was his favorite activity when he was going to be at the Ruins. He lusted after Toriel because she was sexy, and he wanted her to touch his femur inappropriately. He touched his femur gently. "Ahhh," he whimpered as he moved his ulna up his ecto-dick and watched webkinz move across the screen. Vigorously stroking himself as he looked at the doorway, Toriel walked in and screamed, "What are you doing, you fucking piece of yiffy garbage?!"
"I'm just doing research for a science project that involves internet memes. They are very dank. Frisk told me to look at this link," he sighed loudly. Then, Toriel walked towards him and started to jerk him off. "Wow, I didn't see how thin it was. Very thin," she laughed quietly.
Sans winked at her and said, "I fuck myself to the thought of you every Tuesday when I am home alone. Sometimes I will do more than that, like yesterday when I had Grillby come over. He liked to engulf."
"What did you say to him?"
"I wanted to tap that flaming hot arm."
Toriel laughed and looked at his sacrum unimpressed with his progress. He needed her to fuck him vigorously into the floor with a large strap-on. He took a shaky fistful of rug and came. She looked down and raised her eyebrow at the sight of his quivering form. Did he go all the way? "Sans, are you finished already?" she questioned him.
"I am very horny still," said Sans while still half erect. He grabbed Toriel's sleeve and pulled her dress completely off. Her expression changed to aroused and shocked. Then, she leaned towards him and put her paw on her genitals. "Mommy wants you to fuck her hard, baby." She touched him on his dick, stroking quickly and firmly.
Then he came again and passed out. She sighed as she moved to the bed and frowned at him. "You're disappointing. Maybe Asgore would be better." She dialed his number and said, "Oh hey daddy. Let's fuck hard tonight."