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Sheldon: "The best number is 73. Why? 73 is the 21st prime number. Its mirror, 37, is the 12th and its mirror, 21, is the product of multiplyi...

Do you know the definition of insanity? Calling somebody crazy even though their mother had them tested as a kid. How can one even doubt such a hig...

Sometimes it's hard to distinguish a genius from a madman. Fortunately for you, this pin allows you to clearly state that you belong to the former ...

Sheldon: (knock, knock, knock) Penny? (knock, knock, knock) Penny? (knock, knock, knock) Penny?Penny: You do realize I stand on the other side of t...

That's what a Magic Cube looks like in the heat of desperate solution attempts ;)

Howard: "Sheldon, you're wrong! Wolverine was not born with bone claws!"-Sheldon: "Howard, you know me, to be a very smart man. Don't you think if ...

Sheldon Cooper from The Big Bang Theory already wears this shirt in various episodes. He knows how evolution works and how we will develop in the f...

Bernadette: "You can't just throw everything in the closet."Howard: "Hey, you can tell me what to do and how to do it, but not ...

There are exactly two reasons why The Big Bang Theory can make tears trickle down your cheeks: 1. You cry from laughing. 2. You find out that the s...