It wasn’t long before the repeated thrusting caused James to grasp his girlfriend’s hips tightly, slowing her down as he pushed load after load of thick, creamy jizz into her. Neither he nor she took into account the changed biology as they watched the poor human girl swell up like she was bloated. James ground his teeth as he couldn’t help but hold his poor flesh condom down as more creamy zebra jizz inflated her. Her womb and intestines filled the foreign substance, the lack of internal space causing her to go from bloated to pregnant, and James showed no signs of slowing down. She could feel it welling up on the back of her throat, making her gag. It was only at that point where James finally stopped and pulled out, watching his thick zebra batter ooze out of the reddened lips of his swollen girlfriend.
So there they were, a puddle of piss, sweat, and sex without a single article of clothing nearby. James was the more lucid of the two as his girlfriend was still exhausted from the wild and rough sex and the subsequent stuffing. James swore she was 15 lbs heavier just from the amount of jizz still in her.