A curious husband, eager to broaden his wife's sexual horizons, gently prods her tight, untouched asshole with his fingers, working them in and out as she gasps, feeling both hesitant and aroused. She's never been touched there before, and her asshole gapes slightly, revealing her newfound vulnerability. He lubes up his cock and pushes against her resistant pucker, the head of his dick slowly slipping in as she whimpers, a mix of pain and pleasure coursing through her.