Semen Vaccine
A group of housemates are watching a news report explaining how scientists have discovered a vaccine to the virus affecting women all over the world. The vaccine turns out to be male semen! The three girls all look at each other, then look at Billy, then they suddenly pounce on him, ripping his clothes off, desperate to get to his dick. They ignore his protests and get to work sucking his cock. As he gets more aroused they get all three of their faces next to his dick, mouths open as he gives them their vaccine!