Season 5, Episode 6: "The Lip Reader"

See, I was sayin' "six,"

but she thought I was sayin' "sex."

We straightened the whole thing out, though.

She confused "six" with "sex"? Yeah.

Well, if she can't tell "six" from "sex,"

how's she gonna lip read from across the room?

Well, "six" and "sex" are close.

It's two completely different sounds.