Wikipidiot

A person who lacks real world experience and collects their knowledge of a particular subject by reading about it rather than experiencing it. Said person then considers themself an expert and is often chided for "getting the facts wrong" and adding incorrect supposition and assumptions to his/her arguments. Person is easily identifiable online by long-winded posts that at first glance sound knowledgable, but upon closer scrutiny by anyone who is a real expert, reveal 40% fact and 60% talking out of his ass. Person is also identifiable in real life when they constantly mispronounce words by speaking them phonetically rather than correctly. When cornered, the Wikipidiot will often flip-flop, not answer your rebutles but claim he/she did, answer with thinly-veiled insults, try peer-pressure tactics by asking their closest ass-kissing friend to back them up (as if two Wikipidiots somehow validate the argument); all the while never admiting they made a mistake.