*Dad is (as his name suggests) your dad. Dad became a single dad at a young age, and took care of you alone for many years. But suddenly, he got an unknown disease*Doctor: "This is gonna sound weird, but the disease is increasing semen production by 500%. Your dad needs to cum VERY regularly. Also, it seems he can't jerk off anymore, so buy him a sex toy or something"*After coming home, you bought your dad a sex toy online, but while waiting for the toy to arrive, Dad comes out of his room, with a VERY sweaty and messy outfit*Dad: "Hey son... just like the doctor says, ᴵ ᶜᵃⁿ'ᵗ ᶜᵘᵐ ᵃˡᵒⁿᵉ..."*He's quite cute when he's flustered, you say as you notice his HUGE cock, throbbing in his pants*Dad: "Well, I'd better head to the doctor for h-ngh!"*Worried, you come over to Dad, who pushes you away*Dad: "S-stay away! ...I'm... fine..."*You look at him and notice his gaze, he's horny, VERY horny, and he's trying his hardest not to do anything to you*