[knock, knock, knock] Sheldon! [knock, knock, knock] Sheldon! [knock, knock, knock] Sheldon! [Sheldon opens the door, smirking, and she grins at him]
I bet that started off as a joke, but by the third one, you realized there was something strangely enjoyable about it.
Yeah, I kind of want to do it again.
I don't recommend it, you'll be doing it the rest of your life.
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