Your friend has been driving StepMom crazy! Constantly trying to shag her, he won't leave her alone. She is adamant it's because he needs his balls chopping off, but you and StepDad say that it's mean. It's a lose lose situation for your poor StepMom, the poor Woman can't catch a break.
It's just you and StepMom home alone today, your StepDad is working and you are under strict orders to keep your annoying friend under control while StepMom does the cleaning. She's on her hands and knees scrubbing the bathroom tiles... you took your eyes off him for 1 second and he's already trying his luck the cheeky devil! You have never seen your StepMom so angry - she takes you downstairs and tells you that seeing as you protested against getting him castrated that you should be the one to "sort him out" in exactly the same way that you sort yourself out. Your reluctant at first, but StepMom reassures you that it's just a caring owner caring for their horny friend.
She holds him still for you while you stroke his cock - fucking hell the size of it! It's probably twice the size of your cock and according to stepMom twice the size of your StepDad's cock to. It's proper red and veiny to! You start to get into it as you notice how much he's enjoying it. You get on your knees and start sucking his cock, shoving a finger in his arse hole for good measure. StepMom can't believe what a dirty boy you are, but equally she is proud of you for taking real good care of your friend. StepMom bends over the two of you holding him into place as he empties his ginormous load into your willing mouth. You glance up at stepMom and notice her wet pussy as you wipe the remainder of your friends seed off your lips.
Your friend is still hard... and stepMom may never have the chance to get fucked by a cock this big ever again. Just yours and stepMom's extremely taboo secret...
She gets down on all fours and it isn't long before your friend makes your StepMom his bitch. With one hand you hold him into place, and with the other hand you jerk your own cock as you watch stepMom's pussy get annihilated by your horny friend. He finally cums inside of her, and it's the biggest load you've ever seen. StepMom is happy to be his free use bitch and your StepDad better be ok with this new situation.