Bertyboy's chastity cage can't contain his hunger. He slips a dildo into his ass, targeting his prostate. He pushes and pulls, fucking himself, lost in the sensation. His body trembles as he milks his prostate, driving himself wild. He can't take it anymore. He removes the dildo and strokes his cock, unleashing a torrent of spunk that coats his cage, dripping down his balls and thighs.