Brennan and Booth in “The Truth in the Lye”

And if you're not helpless, then why did you sleep with her?

Oh, I really don't recall saying that I did!

Well, you didn't have to. I could hear it in your voice. I might as well have walked in on you having sex.

Oh, you didn't, and we weren't.

It's nothing to be ashamed of, Booth. Humans act upon a hierarchy of needs, and sex is very highly ranked. It's an anthropological inevitability.

Thank you, Bones. I really appreciate you boiling me down to your anthropological inevitabilities.

Sure. Any time.