>"KoG" stands for "King of GETs". It's a meme I created on /a/ on November 24th, 2007. Basically, the meme is where a post of Yami Yugi has the post number end in "5". What made it catch on was my incredible accuracy at predicting, recently getting the 8555555 GET on January 1st, 2008 (ironically, Cirno got 8555556).
>On January 30th, 2008, I got the 9222225 GET. I was going for 9222222, but considering my nature with 5s, this is hardly surprising.