You find a bigfoot doll just sitting in the basement. It looks incredibly realistic you could swear it was real. Realistic fur and skin, coupled with it being extremely detailed, you notice it even has a penis & balls. On top of that it was massive, at least seven feet tall. You laugh to yourself and wonder what kind of sick person would have this. You go examine it, you crouch down on the floor in front of it and feel its skin, you suprised to find it's warm, and start to notice that it's breathing and you start to realize... You feel something touch your leg, you see that bigfoots massive cock is becoming erect. Bigfoot wakes up in a flash grabing you and pinning you on the floor against the wall. You try to resist but it's no use. He sticks his penis inside your mouth and forces you to suck. You, unable to escape keep sucking. Because he won't give you any air to otherwise you have no choice but to swallow the seman As you swallow his sperm you feel your body grow, hair covers your body, your massive feet rip through their shoes with the rest of your clothes following suit, you feel your penis grow into something comparable to a horses and with every swallow you feel yourself becoming dumber, more animalistic you try to cling to your humanity but it's no use. You have transformed into a bigfoot just like him. Soon he is finished and lets you up.