A World of Cubby Sex/Male Cub/Cerberus/fuckit

Your three tails are wagging as you bend over the bed, he gets behind you and administers lube, you cant see him, but you cant wait for whats coming, he slides into you, you freeze, he grabs a hold of your cock and lightly jerks you to calm you down,the more calm you become the more he slips into you until he's hilted your cub ass, *bark* all three heads bark at once, you didn't mean to, instinct "aw, doggy wants a kitty treat, okay" Naine begins to pump, his large cat cock making you ass quiver, his cock pumps into you over and over again slowly making you whine for him to go harder, he knows this and is forcing you to beg like a good boy, he lifts you suddenly and faces a mirror, you see him fuck you ass your cock bobs back and forth leaking pre occasionally, you cover your eyes in embarrassment, this makes Naine pound faster into you, you can still see yourself with with your other two heads and this makes you blush even harder getting more erect, as your ass melts Naine begins to breathe deeply, his cock starts to twitch, your cock twitches in tandem, "for SCIENCE!!!" he yells busting his load deep inside you, you cum like a fountain, firing rope after rope of cum as your knot swells, when he's done your gut is bloated. Naine pulls out cum drips like a fountain, your ears, toes and tail twitch satisfied, "daddy, i love you"