You are discovered

You stroke her back and run your fingers through her hair. She kisses your chest and sits up. She pulls herself very slowly off your cock, and you groan at the exquisite feeling of leaving her pussy. She seems to enjoy it just as much as you do. She crawls away from you a little and then turns her head back to you. You have the best shot of her ass just before she wiggles it for your benefit. She is beaming widely at you.

"Come on. You haven't shot the second time. Fuck me like an animal ... on all fours!" She caresses her tight ass with one hand and purrs.

You waste no time in sitting up and scuttling behind her. Your prick is still rock-hard from Loretta's cowgirl bull riding. As you grasp her hips and prod her with your cock, she grabs you between her legs. She stuffs your cock into her weeping slit. You pull her hips toward you, and slice right into her cunt all the way. Your thighs slap on her hips. You both groan. You begin pounding into her cunt, reaching under her and cupping her tits.

You are really going at it when you are both startled by the barn door opening. You stop in mid-stroke, terrified that someone has discovered you. The old farmer will kill you if he sees you fucking his nubile young daughter.