So my brother and his friend were walking across their college campus one day when they hear another student muttering something. They stop and listen. She's just saying "Rats? I hate rats. They drive me crazy. Crazy? I went crazy once. They put me in a hole. I died there. Then the rats came. Rats? I hate rats..." over and over again. My brother, knowing what was up, wants to stay far away, but his friend is intrigued and starts talking to the woman.
Long story short, they begin dating, but he eventually realizes that yes, she is completely nuts. He breaks up with her, with a newfound respect for the sacred texts. Goes back home for winter break. Walks in the door, and there his ex-girlfriend is, having breakfast with his parents.
Turns out she made friends with them while they were dating, without telling him. He'd never introduced them or told her where they lived (this was before that kind of information was trivially available through social media). And he's just standing there at the entrance, going "What the fuck," wondering when he's going to get skinned alive.
Long story short, this guy's fucked seven ways to Sunday.