>Who made this and what the original?
It comes from a famous 2ch chuunibyou copypasta:

中学時代のパソコンの授業でインターネットを使った時
みんなが自分の好きな漫画や野球のページを見てる時に
自分だけこれみよがしに2ｃｈにつないでAAとかを周りに見せてたこと
しかも「このページって何？」って聞かれた時に「ヤバイ奴らの集会所みたいなもん」とか答えたこと
さらに友達に2ｃｈへの行きかたを教えるためにヤフーで2ｃｈって検索させて
でてきたリンクをクリックして2ｃｈのトップページが表示された瞬間に
そいつの耳元で「Welcome to Underground」ってささやいたこと

Google Translate'd:
When I was using the internet in computer class in middle school,
while everyone else was browsing their favorite manga or baseball pages,
I was the only one ostentatiously connecting to 2ch and showing off my AA and stuff.
And when someone asked me, "What's this page?" I answered, "It's like a meeting place for dangerous people."
And then, to show my friend how to get to 2ch, I had him search for 2ch on Yahoo!,
clicked the link that came up, and the moment the 2ch homepage appeared,
I whispered "Welcome to Underground" in his ear.