Your girlfriends been having fantasies but not just regular sex ones... fantasies about gaining weight. Like a LOT of weight. Like getting SO big and round. She stuffs her shirt in the front and the back so you both can see what weight gain would look like on her and it shocks you both a little how horny it makes you. Not just horny for sex but horny for impregnation! Being fat makes her want to be bread by you! Imagine if she wasn’t just big and round because she’s fat but also because she’s pregnant. O.O You both are so turned on by the idea that you have to fuck while she’s still wearing the pillow stuffed shirt.