Megan's awake, and Cuddy tells her to blink her eye (the other one is still swollen shut) once if she can hear her. Okay, but...what if Megan had to blink anyway? This isn't a very sound method, Cuddy. Why don't you make a bet with Megan that if she wakes up you'll leave her alone for a week? Cuddy tells a confused Megan that she was in an accident and had a fever, but that's gone now and she's recovering nicely. Ben sidles up and says he won't leave her side. Cuddy continues using her blink-once technique to ask Megan if she was seeing a psychiatrist and on MAOIs. Megan's blinking indicates that she was. Or that her eyes are dry. Same diff. And then her heart starts racing and Cuddy has to give her the paddles.
When House reports to work the next morning, he finds Cuddy in his office playing with a rubber-band ball. She smilingly tells him that he lost the bet after all, since Megan totally almost died. What great news! Congratulations, Cuddy! Your trophy can be an urn with Megan's ashes in it. Geez. House splits hairs and says he explained the fever. Megan's heart problem is another matter entirely. Cuddy says the only confirmation they got that House's guess was correct was a wink. "Maybe she saw a cute guy across the room," she says. Well, now we see the folly of our blink-once plan, don't we, Cuddy? House is more concerned with a note from the guitar-napper on his desk that contains a Polaroid of his guitar and the words "I'm not dead. Yet." Kind of like Megan. Cuddy dares him to solve Megan's heart problem or else admit he can't solve cases on his own, and he springs into action by walking her over to the Whiteboard O'Symptoms, giving her a pen, and leaving.