Sheldon: [looking at Tweets about his lecture on Raj's laptop] I'm not familiar with the acronym "KMN".
Leonard: Uh, from the context, we think it means "Kill Me Now".
Sheldon: [unsettled] Well��s'pose everyone's entitled to their own opinion. I think I'll turn in.
[He starts to walk to his bedroom]
Sheldon: [very quickly, looking back at his friends] I didn't want to teach those poopyheads, anyway! [leaves]
Howard: [short pause] FYI, I think that's what Darth Vader said just before he started building the Death Star.

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