"Let me just throw this out," Suzi says as she walks to the bathroom. Once in there, she turns on the light.
She hold yours slimy, bloated body between her fingers with disgust. Closing the bathroom door behind her so as to have a last, private word with you, she whispers, "I know I said I'd keep you around but honestly it looks like you've fulfilled your function, and I couldn't care less about you. And it's not good that there's someone who knows what I can do, even if that someone is now a used fucking condom. So I guess this is where you and I say goodbye. I'd say this is the end for you but I doubt it will be, even if you want it to be."
She dangles you over the toilet bowl. You're terrified, knowing a single flush will separate you forever from the Transformation Gun and any chance of returning to human form, but a part of you welcomes the sight of the water, just so long as it washes this guy's bitter seed out. Just before she drops you, however, her painted fingernails pinch you, squeezing the semen into your "head", amplifying the taste ten fold. She twists your slick body around itself deftly and pulls it tight into a knot, so that your contents are trapped inside you. You scream in revulsion. She knew what she was doing and loves torturing you one last time.
Her fingers open. You land in the bowl with a soft plop. Her hand rests on the toilet handle and twists, sending a massive torrent of water down upon you which drags you down into the silent, cold blackness of the sewage system. You don't stop until you reach a narrow tunnel in the sewer, where you become caught in a buildup of fat and other detritus flushed down the toilet, waiting for every second to go by, with only a pile of shit, your thoughts, and the taste of some dude's cum for company.
You are a used condom now, and used condoms, while they never truly die, rarely have interesting stories to tell. So looks like this may be the end.