Collaborative sex stories let us write the plot together

(Her Secret Fantasy, continued by JustAName...)

“Why don’t we continue but without man delay?” Monica asks.

“Sure, I would love to get load after load all up in my pussy…” Rachel replies.

“I can fulfill that need…” you say, as you make your way over and slowly push your rock-hard dick inside your girlfriend. You begin to increase your pace, and you level out as she moans and squirts hard. You keep thrusting. Monica starts to finger herself while watching the show.

As you feel your balls quiver again, you slam into Rachel and release your load deep inside her. However, something doesn’t feel right. While your balls were quivering, they got larger, about the size of small oranges.

The sensation feels so good, like a normal ejaculation, however it lasts much longer than a few seconds. It continues and continues, almost as if you’re taking a long pee, and before too long Rachel looks to be nine months pregnant. However she is just filled with your cum. Her belly keeps expanding, until you feel the cum squirting back out of her pussy past your dick, at which point you must pull out, and you do, causing your cum to gush out of her hole.

To keep from making a huge mess (however you still do), you switch over to Monica, shoving your squirting dick up into her still-tight pussy. Her smaller body cannot take a filling like Rachel’s, but she still gets quite filled. Before long she also looks pregnant, and you must pull out before she explodes.

That leaves you no choice but to switch back to Rachel, and you shove your still-hard and gushing cock up far into her pussy.

She then gets filled to the brim again, until your dick finally stops shooting. But it continues to remain hard, in her tight and soaked pussy. You lie there on top of your pregnant-looking girlfriend, feeling spent, but with a dick that is still ready and hard. Monica is lying there still with a giant belly. She takes an expanding dildo and shoves it in her pussy, expanding it so that it plugs her up.

You wonder what to do next, whether you should keep going with these two ladies or if you should call up your step-sister, since you two have a past.