Okay, I apologize if this is a stupid question but what is Creepy-Pasta? What a weird name. The FAQ section didn't cover it.
Wow. Um, okay, let me explain.
Way back when on 4chan, whenever people would post the same stories over and over, it was called copypasta (a play on the phrase copy paste). This bled into all the boards, including /x/ (the horror sub-board). /x/ would usually post the same stories over and over again as well, but they were horror stories, so instead of copypasta, they were called creepypasta.
Nowadays it's a blanket term for creepy stories that circulate the Internet.
Google is your friend here. Use it.
Oh God, Oh God- is Smile Dog real….??
No, none of it is. A few of the more realistic ones could easily happen, but none of them are actually real to my knowledge.