His wife

Katie was sat reading a book, relaxing with some off-time and a cup of tea, she heard her husband walk into the room and only glanced a little up with a smile, then a look of horror, but she had no time to think about how her husband, Jack, had gained such an enormous rod, only time to think about her rapidly soaking cunt, swelling tits and needy asshole as she tasted and instantly craved her husband's thick, amazing, shiny cum.

She had no idea that every drop of cum was laced with a mutation of the silver, the strange liquid reprogramming her into an insatiable slut who's only purpose now will be to fuck and propagate the infection further. The shine she consumed releasing a copious amount of chemical cocktails that radically alter her hormonal balance, mutating her DNA second by second, all under the disguise of her insatiable lust. An hour in, she was so overwhelmed with her primal needs that the silver tentacle sliding out of her husband's throat and into her asshole wasn't even registering as "abnormal".

At that point the silver had completely taken over Katie's conscience thoughts, she didn't understand the monstrous picture happening in the living room of her husband face fucking her, every pump unleashing streams of thick, musky, argent cum into her body, her being so full that most of it at this point is simply spraying out of her mouth, gagging and vomitting her own silver slop down both of them. Getting pumped by a thick, glistening tentacle that is coming out of her husband's mouth unleashing even more juices into her ass. Her husband having thin tendrils petered from his own slutty ass, thin and long as they slide over the sluts body and finds his wife's aching tits, sensing her pulsing nipples and sliding into them and into her chest, filling her with more shiny juices as her entire body reaches climax after climax. The thin tentacles pushing into her thick nipples in rhythm, every second her milf form filling out more as her large sagging tits firmed up, filling more with the shine and spraying out a small amount of argent breastmilk from the gaps the tendrils left.

She was in absolute bliss.