She needs more convicing; Fuck Mom some more.

"Mom, she probably needs to get more comfortable. Maybe if you suck me hard again and we fuck some more..." You say, clumsily pressing the issue.

Mom looks quizzically at you but eventually relents. "Well, I guess you could be right. Kate, you don't know what you're missing..."

She gets on her knees, positioning you and her right in front of your sister. She easily - almost expertly - swallows your softening cock. She bobs her head in quick, hungrily sucking on your sick. Despite having just cum, you quickly get hard again.

It's too much for you and you tell your mom to get on the bed. She appears willing, but you lift her up by her arms anyway and practically shove onto the bed on her back.

With forceful, if clumsy, motions you quickly get on top of her and slam your cock in her sloppy, wet pussy. With one hand grabbing and tightly squeezing her big tit, you immediately begin vigorously fucking her.

Your sister is shocked, but watches silently as you thrash on top of your mother.

Mom is equally shocked at the aggressive and sudden penetration. But soon she spreads her legs wide in the air and lets out loud moans of pleasure.

You fuck her deep, hard and fast; not letting up as if there was no tomorrow. Fairly quickly, your mother starts convulsing wildly underneath you. Her loud squeal tells you she just had a massive orgasm. Having just cum, you continue thrusting deep in to her and ride out her orgasm.

Your sister watches with wide eyes and her mouth agape.

Your mother on the other hand looks up at you with lust and surprise. She's clearly willing to let you fuck her raw if you so wanted.