Leonard: All right, well, let me see if I can explain your situation using physics. What would you be if you were attached to another object by an inclined plane wrapped helically around an axis?
Sheldon: Screwed.
(Later)
Sheldon: ... and I don’t want to be joined to another object by an inclined plane wrapped helically around an axis.
Amy: In what way are you screwed?
Sheldon: Screwed.
(Later)
Sheldon: ... and I don’t want to be joined to another object by an inclined plane wrapped helically around an axis.
Amy: In what way are you screwed?
From: The Desperation Emanation
BBT Transcripts
Wikipedia Episode Guide