Killian Knox, the burly stepdad, catches Tom Bentley, his lanky stepson, masturbating in the shower. Instead of scolding, Knox joins him, laughing as they soap up. Bentley's tight, young ass is irresistible to Knox, who pushes his thick cock inside, making Bentley gasp. Knox pounds Bentley's ass, their wet bodies slapping together, Bentley's moans echoing off the tile walls. Knox's muscular body flexes, fucking Bentley harder, making the twink's asshole clench around his cock.