CGPGrey: What is a leap year?

[patq911]

[video=youtube;xX96xng7sAE]http://www.youtube.com/watch?v=xX96xng7sAE[/video]

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I wish this guy were my teacher for all the subjects in highschool

[Speedstream]

I'm watching some of this guy's other videos. Pretty damn interesting stuff.

[DesolateGrun]

Hint hint