Ann's up to bat

With no real warning, Nancy turned and shot a foot straight into her husband’s balls, her toes aimed upward to dig right into his tender genitals. “NNNG!” He grunted and fell to his knees, but before he could even reach them Nancy delivered a knee to his chin that rattled his teeth. She grabbed his hair and slammed his face down into the carpet.

“That is a basic takedown,” Nancy said plainly. She wasn’t even breathing heavy as her father unsteadily picked himself up. “Tender areas are easy targets on anyone. Now, I want you to try that.”
“What!?” Ann gasped.
“Do what I did. You can start off with just the kick if you like.”
“But… but that’s Daddy!”
“It’s alright. He likes it. Doesn’t he, Daddy?”

She gave her husband a sharp look, and he nodded. He might have actually liked it on some level, but his pain was visible.
“See? All good fun,” Nancy assured. “Now show me what you’ve got.”

Ann went up to her father, bare bodies standing before each other as she threw a kick at his genitals. Her little foot smacked across his cock in a way that made him hiss in pain.
“Come on, snap that leg up. Let him really feel it.” Nancy encouraged her daughter, giving her an example on the air that showed her lightly haired pussy off wonderfully.
Another kick went up, and Ann felt her feet dig into the tender ball sack. She saw her father’s knees buckle and her face turn red, emitting a soft scream in pain. It felt wonderful, she thought.