Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny over a chair. Leonard tries to add some spice to his long-distance relationship with Priya.



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With Priya having moved back to India, she and Leonard decide to try having a long distance relationship, which includes Skyping each other on a regular basis. Howard suggests that they take that communication one step further by having high speed on-line sex with each other. When conventional on-line sex between the two of them fails, Howard has some equipment that he thinks will enhance their on-line experience, which he demonstrates with Raj while an comfortable Leonard looks on. While Leonard and Priya are talking on-line, Sheldon takes refuge in Penny's apartment. Sheldon is in love with how comfortable Penny's new chair is, until he finds out that it is a used chair that she found discarded on the street. A freaked out Sheldon is certain that he has contracted some nasty bug from sitting in the chair, and does whatever he can to make Penny get rid of it. None of Sheldon's tactics works. Something else may make Penny think twice about keeping the chair. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


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Release Date:

22 September 2011 (USA)  »

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Aspect Ratio:

16:9 HD
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Did You Know?


The second of two episodes in which Sheldon does not wear a graphic T-shirt. See more »


When Sheldon freaks out about the new chair, he throws a yellow magazine on the coffee table that moves around between shots. See more »


Sheldon Cooper: Leonard, thank goodness I found you. I need you to check my head for chair lice.
Leonard Hofstadter: I'm not going to check you for lice again.
Howard Wolowitz: Just his head, right?
Leonard Hofstadter: I don't want to talk about it.
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References Diff'rent Strokes (1978) See more »


Diff'rent Strokes
Written by Al Burton, Gloria Loring, and Alan Thicke
Performed by Mayim Bialik
See more »

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User Reviews

Sheldon is his usual self in "The Infestation Hypotheses" ep of "The Big Bang Theory"
17 November 2011 | by (Baton Rouge, La.) – See all my reviews

In a nutshell about this season's "The Big Bang Theory" ep: Leonard tries a long-distance relationship with Priya on the internet. Yes, that includes sex. Sheldon, not wanting to intrude on them, stays at Penny's and likes her new chair...until he finds out she picked it from the street. She refuses when he demands it be thrown back out. So he tries to get Amy to appeal to her new "bestie" his point of view. Penny once again refuses...until she and Amy discover something crawling inside. Another hilarious ep of "TBBT" from this season. Sheldon, Penny, and Amy are especially on fire here. I really don't want to say anymore than that so on that note, "The Infestation Hypothesis" is an especially good ep of "The Big Bang Theory".

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