It was the noise that woke him. The sound of falling, of things crashing into each other and the ground.

Booth scrambled to his feet, racing for the bedroom. "Bones!" he called, not waiting for her answer. "Bones, are you okay?"

The door to the bathroom was closed and he opened it without hesitation, not once considering what might be going on behind that door.

She was standing at the sink, looking at him with an amused expression on her face. A toothbrush was in one hand. Her other was holding the sink so she didn't lose her balance.

"My crutches fell," she said with a laugh.

"Your crutches?" he repeated. He wondered if his heart would ever recover.

"Yes, Booth, my crutches. I didn't fall." She narrowed her eyes at him. "You fell asleep on the couch, didn't you?"

"Yeah," he said. "The crashing woke me up. I thought you fell."

"Well, that's logical considering the noise they made. But the next time you might want to knock first before just barging in the bathroom."

"Why? You didn't knock when you walked in on me that time."

"That was different," she said, her voice taking on that scientific tone.

He leaned against the door frame. "How is that different, Bones?"

"You were in the tub. It isn't my fault you stood up."

Shaking his head and her perverse logic, he moved around her to retrieve her crutches. "Could you do me a favor, Bones?"

"Sure," she said. There was not a single second of hesitation before the word was out of her mouth.

"Could you quit scaring me? If every time you do it, I lose five years of my life, I'm going to be dead before Christmas."