WGMG is when people refer to airport codes (YUL) when saying where they are. Yeah, we get YYC, and maybe Vancouver and a couple others, but if you're anywhere else then 90% of posters aren't going to know where you are and probably aren't going to take the time to google it.
I know frequent travelers on here like to think the whole world knows every airport code because they do, but we don't.
