Alexis Von Yates, now 35, had pounced as she watched a horror movie with her stepson, who was visiting his dad in Ocala last July, her arrest warrant showed.

The since-fired nurse told the boy she was “horny” after not having “sex in two weeks” while “on her period” — leading him on to strip her and have sex, while his younger siblings slept in a nearby room.

Throughout, the disturbed stepmom moaned “Oh f–k” and “This is so bad,” the boy later recalled.

The pair thought the boy’s dad, Yates’ lineman husband Frank, was working all night — but he walked in on them as they were having full sex, the affidavit noted.

(http://www.autoadmit.com/thread.php?thread_id=5777933&forum_id=2!#49286329)