You put on your panties and then poop
From Create Your Own Story
You put on a pair of panties and sit on the toilet again. Then you realize you are actually quite full and don't want to let any of your waste fall in the toilet, so you go you lie on the step and prop your legs up on the edge of the bath with your panties hanging over the edge of the step (it's a corner 'cheese wedge' bath).
In a much more comfortable position, you start straining. As relieving your bowels has always been pleasurable for you, you start massaging your clitoris as you poop. You feel the panties stretch, and can see the material tent away from you, but you have much more to give.
By now your panties are full and sagging under the weight of the poop, so you reach into the poop and grab a handful. you decide to place it on your breast, and another on the other nonexistent boob. After rubbing the poop for a bit, you realize you will need more space in your panties, so, holding your vagina open with your other hand, proceed to place a few handfuls of poop inside.
Now that your breasts have poo on them, your panties are full to the brim and your cunt has shit in it, you finally stop defecating. You think, "What the hell." and masturbate for all you are worth.
Now you...
Clean up, but first fill your vagina with poop and keep it there.
