When you dismiss or delegitimize a point, comment or argument by proclaiming it "Not an argument" and ignore what's being addressed. This is standard tactics by ideologues in comment sections, twitter and facebook. Famously used by internet nutter Stefan Molyneux ad nauseam.
Actual Molyneux Fallacy committed on 15 July 2017 on Twitter:
Stefan Molyneux: "Boycott Reebok!"
Laci Green: "You sound like an SJW"
Stefan Molyneux: "Not an argument"
Stefan Molyneux: "Boycott Reebok!"
Laci Green: "You sound like an SJW"
Stefan Molyneux: "Not an argument"
by thelordoflard July 18, 2017