Now you can feel the rune burning in your flesh, now you get a moment of clarity. For a second you don't know where you are or who you are with. Then you remember the conditioning, you remember that this is your son. You remember that he loves your dick and you love giving it to him. However you feel like something is off, something is wrong. You try to stop fucking him and you can't. You can't seem to stop no matter how hard you try and you fucking love it despite the fear. You feel more turned on than ever and you just keep busting nut after nut. You can smell the sex on the air, you can smell your sperm that is squelching out of his ass with each thrust in and coating your balls. You can smell your powerful mighty dick which is breeding his ass. You can smell the sweat that is covering your body. You should probably try to take another shower at some point, however you are far too busy fucking this boy's ass. You keep going like you were before, really slamming into him. Really breeding that hole for all it is worth. You feel like you could fuck him for hours. You end up doing just that too, it is hours later and you are still going. The boy had even begun to puke your cum there was so much of it in him. His stomach was swollen like a full term pregnancy it was so damn full of cum. Only after the sixth hour did the young man finally do another motion and the run faded away and you finally felt free to stop fucking him. You were happy at the chance for a break, even though you had enjoyed every moment of it.