Beth bit her lip against the burning pain. It was ebbing away slowly and being replaced by a wanton lust that she had never felt before. Her small body throbbed from head to toe with it. She wiggled her ass and pushed back against her father's cock. She could feel it sinking gradually into her asshole.
"Hurt?" he half grunted.
"No! Feels fantastic! Fuck it!" she demanded.
He pulled her back, harder. His cock sank into her little asshole until he reached the end. Half of his cock was inside her. Beth tightened the internal muscles around it and Martin gasped.
Louse and Kathy had finally rolled apart and lay on the carpet, gasping, watching the man and the girl. Louise felt a twinge of jealousy. She wished that his cock was in her asshole.
"Oh, Daddy! I'm coming!" Beth rasped almost in disbelief.
The small body trembled and jerked. Martin's face was twisted in concentration. His cock pulsed and throbbed as Beth's muscles milked at it. He gritted his teeth and tried to hang on. It was useless. With a groan, he lunged, trying to get another inch inside her and then stiffened.
Beth squealed when she felt the hot flood of cum filling her asshole. With a jerk and shiver, she came again. Martin pumped her little ass full of cum and then pushed gently until her asshole slid off his cock. He fell back gasping in the chair. Beth collapsed onto the carpet.
Louise and Kathy sat on the carpet and looked at the other two members of the family, then at each other.
"Looks like one man isn't going to be enough for this family," Kathy said with a grin.
"Doesn't look like it. Any suggestions?" her mother asked.
"Well, let's see. I can only think of a couple and I don't know if they could keep their mouths shut." The girl grimaced.
"That's the thing. Keeping their mouths shut," Louise added.
"Oh, I think we'll find someone."
"But in the meantime?" Louise asked.
"Well, I've always wanted a dog."
Mother and daughter smiled dreamily at each other.