Top Definition
Someone who, acting under the cover of internet anonymity, arrogantly and incessantly berates, argues with, or puts down others while masquerading as an expert on subject/s he or she knows nothing about.
John is such an internet big shot; despite his ignorance of medicine, he insists on internet message boards that Dr. Chu is an idiot for endorsing the utilization of palliative care measures for terminally ill patients.
de Smoking Hot Natalie 23 juin 2011

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