A reply given to overly-intellectual or contrarian ideas made in a comment section. Often associated with entitled, outspoken atheist types.
Typically said in comment sections lacking an image option, hence the .jpg in the phrase.
User 1: "Nobody can go to hell because god and hell don't exist."
User 2: "@User1 Fedorashrek.jpg"
A fedoratard is someone named fedoratum#6195, a fedoratard is someone that doesn't realize that everyone knows he's a retarded skid and a fucking nigger.