"This is gonna hurt," the doc warns, his thick, veiny cock throbbing with anticipation. The boy nods, eager to feel the doc's massive tool stretching his tight little hole. The doc lubes up and pushes in, the boy gasping as he's filled. The doc starts slow, then picks up speed, fucking the boy hard, his big balls slapping against the boy's ass. The boy takes it like a champ, his own cock hard and leaking as the doc's fat dick hits his prostate again and again.