The Big Bang Theory Season 3 Episode 22: The Staircase Implementation
First aired on May 17, 2010
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Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
Showing 1 quote.
Leonard: What am I doing in your spam folder?
Sheldon: I put you there after you forwarded me a picture of a cat playing the piano entitled, "this is funny."