An
annoying and over-used initialism (not an acronym) meaning "shaking my
head" or "shake my head".
It is used by idiots when they think they are "winning" an argument on the
internet, but are actually just spouting incoherent nonsense and calling other people idiots without any evidence.
Yeah, you've met that guy, too, haven't you?
Guy 1. The
holocaust dident happen!!!1
Guy 2. Pfft, where's your source?
Guy 1. Fuck u your an idoit every1 nos tht the
holocaust dident happn if it did thn how come there are jews
alive 2day HMM?? smh