Quote from Barney in Bad Crazy
Ted: Okay, fine. I admit it. She's crazy. Obviously. But I'm not in this for the long haul. It's just, you know, it's just fun.
Barney: Of course it's fun, at first. But then when she starts calling out the name of her high school science teacher in the throes of passion, it's really fun. But then when she starts bringing knives into bed and making you fear for your safety? It's really, really fun. But then when she starts unbuttoning your pants while you're being forced to drive blindfolded down the freeway with a gun pointed at your... I'm sorry, what were we talking about?
Barney: Oh, right. That girl's crazy. You gotta break up with her.