[Penny just gave Leonard and Sheldon each a vintage Star Trek transporter toy]
Sheldon: Look, it was actually designed for my vintage Mr. Spock action figure!
Penny: Oh, that's great, let's open it up and put him in there!
[Leonard and Sheldon recoil and cradle the boxes defensively]
Sheldon: Oh, good lord, no!
Penny: Why? They're just toys.
Sheldon: Mint in box!
Penny: C'mon, can't we open one up and take a look?
[Leonard and Sheldon recoil again]
Leonard: No! Once you open the box it loses its value.
Penny: Yeah, yeah, my mom gave me the same lecture about my virginity. I gotta tell you, it was a lot more fun taking it out and playing with it.

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