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    17 Sheldon Cooper Quotes

    The Big Bang Theory

    Sheldon Cooper is the Caltech theoretical physicist at the center of The Big Bang Theory, a man who treats etiquette, comic books, and the scientific method with equal reverence. His lines land because he says the quiet part out loud, whether that means correcting your grammar, defending his seat on the couch, or explaining why he cries. Below are his real quotes, each with the season and episode it comes from.

    “I'm not crazy. My mother had me tested.”
    The Big Bang Theory; Season 1, "Pilot" — introducing himself to his new neighbor, Penny
    “Yes... it tells us that you participate in the mass cultural delusion that the sun's apparent position relative to arbitrarily defined constellations at the time of your birth somehow affects your personality.”
    The Big Bang Theory; Season 1, "Pilot" — telling Penny what her horoscope actually proves
    “O Gravity, thou art a heartless bitch.”
    The Big Bang Theory; Season 1, "The Big Bran Hypothesis" — after slipping on the icy sidewalk
    “Every Saturday since we've lived in this apartment, I have awakened at 6:15, poured myself a bowl of cereal, added a quarter-cup of 2% milk, sat on this end of this couch, turned on BBC America, and watched Doctor Who.”
    The Big Bang Theory; Season 1, "The Dumpling Paradox" — explaining why his Saturday routine cannot change
    “It must be humbling to suck on so many levels.”
    The Big Bang Theory; Season 1, "The Pancake Batter Anomaly"
    “It's on, bitch.”
    The Big Bang Theory; Season 1, "The Bat Jar Conjecture" — accepting a physics bowl challenge
    “Notify the editors of The Oxford English Dictionary: the word 'plenty' has been redefined to mean 'two.'”
    The Big Bang Theory; Season 2, "The Codpiece Topology"
    “That is my spot. In an ever-changing world, it is a simple point of consistency.”
    The Big Bang Theory; Season 2, "The Cushion Saturation" — explaining why he always sits in the same seat
    “I prefer to let George Lucas disappoint me in the order he intended.”
    The Big Bang Theory; Season 2, "The Lizard-Spock Expansion" — refusing to watch the Star Wars films out of release order
    “Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.”
    The Big Bang Theory; Season 2, "The Lizard-Spock Expansion" — teaching Raj his expanded version of the game
    “Do you realize what this means?! All I need is a healthy ovum and I can grow my own Leonard Nimoy!”
    The Big Bang Theory; Season 2, "The Bath Item Gift Hypothesis"
    “Evolution isn't an opinion, it's fact.”
    The Big Bang Theory; Season 3, "The Electric Can Opener Fluctuation"
    “Alright, Poindexter, sit down, shut up, and listen.”
    The Big Bang Theory; Season 3, "The Cornhusker Vortex"
    “One cries because one is sad. For example, I cry because others are stupid.”
    The Big Bang Theory; Season 3, "The Gorilla Experiment"
    “I need to determine where... squateth the toad of truth.”
    The Big Bang Theory; Season 3, "The Einstein Approximation"
    “All forms of physical contact up to and including coitus are off the table.”
    The Big Bang Theory; Season 3, "The Lunar Excitation"
    “Bazinga!”
    The Big Bang Theory; recurring catchphrase, said throughout the series after tricking or pranking someone

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    Sheldon Cooper quotes: FAQ

    What is Sheldon Cooper's most famous quote?
    "Bazinga!" It is the word Sheldon shouts throughout The Big Bang Theory whenever he has just pulled off a prank or joke, and it became his signature catchphrase across the whole series.
    Why does Sheldon Cooper say "that is my spot"?
    He says it in Season 2's "The Cushion Saturation" to explain why he always sits in the same seat on the couch: "In an ever-changing world, it is a simple point of consistency." The line sums up his need for routine and order.
    What does Sheldon mean by "I'm not crazy, my mother had me tested"?
    He says this to Penny in the Season 1 "Pilot" episode, deadpan, as proof that his unusual behavior is not a mental illness but simply who he is. It became one of the show's most quoted lines.
    What is Sheldon's full Rock-Paper-Scissors-Lizard-Spock speech?
    "Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors." He explains it to Raj in Season 2's "The Lizard-Spock Expansion."
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