Douchieness level: Naming your restaurant "Grahamwich" (which he did)
Whatever gods created the Internet probably did not know they would revolutionize the way people complain. YouTube comment sections are straight comedy and there is nothing better than a scorned Yelp-er. Graham Elliot, chef and owner of multiple restaurants with questionable names, is not a fan of the comment clapback and "publicly humiliates" restaurant patrons who complain online. It's unclear what this humiliation entails, but aggressive hashtags are probably involved.