Sheldon Uses Positive Reinforcement
When Leonard tells Sheldon he needs to use more honey than vinegar on Penny, he tries an experiment where he uses chocolate as positive reinforcement on Penny. Amazing.

Rating: 4.4 / 5.0 (10 Votes)
Photo Credit:
The Big Bang Theory
The Big Bang Theory Season 3 Episode 3: "The Gothowitz Deviation"
Leonard Hofstadter, Sheldon Cooper, Penny
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TBBT Photos, The Big Bang Theory Season 3 Episode 3 Photos, Leonard Hofstadter Photos, Sheldon Cooper Photos, Penny Photos
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The Big Bang Theory Season 3 Episode 3 Quotes

Penny: I give up, he's impossible
Sheldon: I can't be impossible, I exist. I believe what you meant to say is, "I give up, he's improbable."

Penny: I'll tell you what, next french toast day, I'll make you oatmeal
Sheldon: Good lord, are you still gonna be here next french toast day?