Bo energy.

Turns out that I was weaker today than yesterday. zzz. sorry, not in the mood to really.. "play" -.-

okay, turns out I've found the addictive video on quadratic formula [easier to memorise, well, after watching this video. HAHA] The second video is by VJC. it's quite crazy. I like the part with the light xD



http://www.youtube.com/watch?v=18ZQd12Vq28 [sorry guys, can't add this in here, they didn't allow embed]

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