Good son:Put his cock back into your mouth
From Create Your Own Story
You put his cock back in your mouth and begin to suck it, taking it deep in your throat just as Grandpa's hand strikes you again on the ass. You try and scream, but with his massive cock in your throat, all that comes out is a whimper.
"Oh yes," Grandpa says, and he strikes you again and again. With every blow you cry out around his growing erection, making him moan with pleasure at the pain he is giving you, while your ass turns red and bruised from the abuse.
"Stop! That's a good boy, now lay down and let me see," Grandpa commands, pulling you off of his massive cock by your hair.
Grandpa: