Set between Seasons 6 and 7

Booth knew he'd regret what he said as soon as he said it. He tried in vain to explain what he meant before they left for work, but Bones was having none of it. He decided to try again.

"Bones, look...I'm sorry. You know I didn't mean it. I was just irritated...come on….." He decided to throw in a charm smile for good measure.

"I'm not going to discuss this with you on the way to work, Booth. I'd rather wait until I'm no longer angry."

"What is there to be angry about? It was just a little slip of the tongue."

"It was a big slip of the tongue, but I don't want to argue about it."

"You're not being rational, Bones. You know that? I can't believe you're holding a grudge over a simple mistake."

"A simple mistake? As I recall, you started this argument with your ridiculous notions. I'm an adult, Booth. I lived by myself for many years. I know how to put toilet paper on the holder. I don't need to be compared to Hannah."

"All I said was that even Hannah knew how to put the paper correctly on the rack."

"I fail to see what difference it makes as long as the paper is available."

"It rolls better overhand. But you're right. It doesn't make difference, really."

"Why did you compare me to Hannah?"

"I was joking. You know that."

"No, I don't. However, I suppose it would be funny if I compared you to Sully. He never cared about such things."

"Because he lives on a boat! Come on. A little smile?"

"Yes, I can smile, because I'm thinking about Sully… and his gluteus maximus…"

Booth was spluttering. "What? Why would you say that?"

Brennan laughed. "Just a slip of the tongue, I guess…"