Sheldon is annoyed when Leonard turns to Leslie for comfort after seeing Penny with another guy.



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Leonard does not want to admit that he felt awkward seeing Penny on a date with another man. Leonard states to the guys that he is happy that Penny is moving on with her life, as has he. However, they all know that there is no other woman yet in Leonard's life. Against Sheldon's sensibilities, Raj suggests to Leonard that he ask Leslie Winkle out again. Surprisingly, Leslie is open to the idea as she is no longer using sex solely as an occasional to rarely used stress reliever. Leslie suggests they pursue a traditional dating ritual with the objective of marriage and children. Because Leslie and Leonard are dating, Sheldon tries to convince Penny to hook-up with Leonard again. But if Penny doesn't comply, he may make Leonard choose between Leslie and him. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


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Release Date:

29 September 2008 (USA)  »

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Aspect Ratio:

16 : 9
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Did You Know?


The deal breaker for Leslie is that Leonard believes string theory better unites quantum mechanics with general relativity than loop quantum gravity, which she doesn't, so they can't reconcile which theory they will raise their children to accept. See more »


(Possibly intentional) When Leonard is recalling past relationships he only brings up two: Joyce Kim and Leslie Winkle. He seems to have forgotten the unnamed French woman with a PhD in French Literature Sheldon discussed with Penny in the previous episode. See more »


Sheldon Cooper: Oh, Mario. How I wish I could control everyone the way I can with you?
[Presses buttons frantically]
Sheldon Cooper: Hop, you little plumber! Hop, hop, hop!
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Crazy Credits

CHUCK LORRE PRODUCTIONS, #217 CENSORED Tonight's vanity card is about censorship. It was censored. As always, you know where to look. See more »


Features Super Mario 64 (1996) See more »


Big Bang Theory Theme
Composed and Performed by Barenaked Ladies
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User Reviews

The Codpiece Topology was another good episode of "The Big Bang Theory"
20 September 2009 | by (Baton Rouge, La.) – See all my reviews

With the season premiere tomorrow, I'm catching up on second season episodes of "The Big Bang Theory" to prepare. In this second episode from last season, as the guys are coming back from a fair requiring dressing up in Middle Age (as in the era of knights and fair maidens) costumes where Sheldon complains of the accuracy of certain things, Penny arrives with a date which makes Leonard jealous. When he and Sheldon are at lunch at their university, Leslie Winkle arrives and proposes to give a relationship with Leonard another try. This does not sit will with Sheldon and he tries to convince Penny to take Leonard back. Penny saying she and Leonard are just friends won't do for him. I'll stop there and just say while not as hilarious as other episodes, it was an interesting look at the hatred Sheldon and Leslie have for each other and how Leonard has to choose between them. And Howard and Raj, as always, have their moments here. I'll review another episode soon...

4 of 6 people found this review helpful.  Was this review helpful to you?

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