Best definition
The phenomenon in which persons on the internet use personal experiences, preconceived notions, 2nd hand accounts and/or vague memories of articles to criticize, debunk and discard actual scientific, factual or otherwise documented cases as reported, often simplified, by the media.
My Zorktaposition…

– Looks photoshopped to me

– I’m calling BS. A friend of my uncle’s neighbour once did that and it insert conflicting statement here.

– I’m not a lawyer, but that’s definately illegal/legal/impossible/expensive in this/that state/country/city/cave.