creepypasta
Urban legends or scary stories circulating on the Internet, many times revolving around specific videos, pictures or video games. The term "creepypasta" is a mutation of the term "copypasta": a short, readily available piece of text that is easily copied and pasted into a text field. "Copypasta" is derived from "copy/paste", and in its original sense commonly referred to presumably initially sincere text (e.g. a blog or forum post) perceived by the copy/paster as undesirable or otherwise preposterous, which was then copied and pasted to other sites as a form of trolling.
(Source: Wikipedia)
