A national unit of measurement of area or volume used in Australia based upon the size or volume of the national sporting coliseum, the Melbourne Cricket Ground. In terms of area, one (1) MCG is 17,720 square meters and 1,574,000 cubic meters in volume.
"Mosher-Chav Group" originating around Workington, England. They are a huge group of adolescents who smoke weed and other things that are antisocial behavior, like threatening people or beating them up, vandalism, etc. Their graffiti tag is MCG.
They are basically emos and chavs but unified. This term is only really used to describe the one group around Workington/Cumbria.
meme coin gooner- this is that one person who sits on meme coins all day and just goons to the price of solana going up if that sounds like you... then you are a mcg