Penny: Hmm... Cute dresses. I bet this looks great on you.
Leonard Hofstadter: We're not living together.
Penny: Okay. Hmm... Scented candles, fuzzy slippers. Ooh, floral bed sheets.
Leonard Hofstadter: We're not living together!
Penny: Okay, moving on. Uh, who are these guys at Disney World?
Leonard Hofstadter: Uh... the big dog is Goofy. And... the older couple with the mouse ears, I have no idea.
Leonard Hofstadter: We're not living together!
Penny: You're gonna go down swinging, huh? All right. Well, we've got your body lotion, your "In Style" magazine, your jewelry box.
Leonard Hofstadter: We're not- where's my Bat-Signal?
Penny: You have a Bat-Signal?
Leonard Hofstadter: I did. It was right here. She must have...
Leonard Hofstadter: Oh, my God. We're living together.
Penny: Really? What was your first clue?