"Gosh dad, are you sure my cock will get as big as yours someday? It’s huge!"
"Sure, son. You’ve been drinking my daddy milk since you were just a little fellah and you’re already bigger than I was at your age. And now that your boycunt is broken in, some of my buddies from work have promised to help you get big and strong even faster by feeding your mouth and ass as much daddy milk as you can take. Hell, you’ll probably be even bigger than your old man."
"Gee, you’d really do that for me, daddy?"
"Sure sport, I’ve already got Bob and Dale lined up for tomorrow night. They can’t wait to help you out. And you’re buddy Tyler’s dad has volunteered too. He’ll be coming over in a couple hours. But he’s pretty big, so we’ll need to start opening you up before he gets here. Run get the lube, son."
"Man, you’re the coolest dad a boy could have. Thank you, daddy."
"You can thank me by milking a load of daddy milk out of my cock with that sweet boycunt, son. Tyler’s dad likes his boycunt pre-bred, so let’s get started."